Search results “Cryptographie definition of autonomy”
How Computer Vision Works
The Google Cloud Vision and Video Intelligence APIs give you access to a pre-trained machine learning model with a single REST API request. But what do those pre-trained models look like behind the scenes? In this video we'll uncover the magic of computer vision models by breaking down how Convolutional Neural Nets work under the hood, and we'll end with a live demo of the Vision API. Learn more here! How CNNs work → https://goo.gl/W51CGk How RNNs work → https://goo.gl/I7RChj Cloud Vision API → https://goo.gl/1OGqoC Cloud Video Intelligence API → https://goo.gl/p2X9xn Subscribe to the Google Cloud Platform channel → https://goo.gl/S0AS51
Views: 20442 Google Cloud Platform
Distributed Ledger
Follow along with the course eBook: https://goo.gl/B5Hr52 or take the full course: http://complexitylabs.io/courses A distributed ledger can be described as a ledger of any transactions or contracts supported by a decentralized network from across different locations and people, eliminating the need for a central authority. All the information on it is securely and accurately stored using cryptography and can be accessed using keys and cryptographic signatures. Any changes or additions made to the ledger are reflected and copied to all participants in a matter of seconds or minutes. Produced by: http://complexitylabs.io Twitter: https://goo.gl/ZXCzK7 Facebook: https://goo.gl/P7EadV LinkedIn: https://goo.gl/3v1vwF
Views: 9790 Complexity Labs
The future will be decentralized | Charles Hoskinson | TEDxBermuda
This talk was given at a local TEDx event, produced independently of the TED Conferences. Tech entrepreneur and mathematician Charles Hoskinson says Bitcoin-related technology is about to revolutionise property rights, banking, remote education, private law and crowd-funding for the developing world. Charles Hoskinson is Chief Executive Officer at Thanatos Holdings, Director at The Bitcoin Education Project, and President at the Hoskinson Content Group LLC. Charles is a Colorado based technology entrepreneur and mathematician. He attended University of Colorado, Boulder to study analytic number theory in graduate school before moving into cryptography and social network theory. His professional experience includes work with NoSQL and Bigdata using MongoDB and Hadoop for several data mining projects involving crowdsource research and also development of web spiders. He is the author of several white papers on the design and deployment of low bandwidth prolog based semantical web scraping bots as well as analysis of metamorphic computer viruses through a case study on Zmist. His current projects focus on evangelism and education for Bitcoin and fully homomorphic encryption schemes. About TEDx, x = independently organized event In the spirit of ideas worth spreading, TEDx is a program of local, self-organized events that bring people together to share a TED-like experience. At a TEDx event, TEDTalks video and live speakers combine to spark deep discussion and connection in a small group. These local, self-organized events are branded TEDx, where x = independently organized TED event. The TED Conference provides general guidance for the TEDx program, but individual TEDx events are self-organized.* (*Subject to certain rules and regulations)
Views: 291044 TEDx Talks
How the blockchain will radically transform the economy | Bettina Warburg
Say hello to the decentralized economy -- the blockchain is about to change everything. In this lucid explainer of the complex (and confusing) technology, Bettina Warburg describes how the blockchain will eliminate the need for centralized institutions like banks or governments to facilitate trade, evolving age-old models of commerce and finance into something far more interesting: a distributed, transparent, autonomous system for exchanging value. TEDTalks is a daily video podcast of the best talks and performances from the TED Conference, where the world's leading thinkers and doers give the talk of their lives in 18 minutes (or less). Look for talks on Technology, Entertainment and Design -- plus science, business, global issues, the arts and much more. Find closed captions and translated subtitles in many languages at http://www.ted.com/translate Follow TED news on Twitter: http://www.twitter.com/tednews Like TED on Facebook: https://www.facebook.com/TED Subscribe to our channel: http://www.youtube.com/user/TEDtalksDirector
Views: 1452481 TED
The Trust That Binds
Trust is at the core of every human interaction. I'm going to describe what trust means to me, the evolution of human systems to facilitate trust, and where we're going. Only available on desktop devices Zacharias' Winning Code: https://github.com/ZachisGit/ipfs-arxiv Anup's Runner up Code: https://github.com/Ghatage/horcrux Please Subscribe! And like. And comment. That's what keeps me going. Follow me Twitter: https://twitter.com/ Instagram: https://www.instagram.com/llSourcell/ Facebook: https://www.facebook.com/sirajology More learning resources: https://medium.com/@BlockByBlock/the-decentralized-autonomous-organization-dao-5e80cfe8c993 https://medium.com/dash-for-newbies/how-to-get-funded-by-a-decentralized-autonomous-organization-4d2430572bcb https://medium.com/practical-blockchain/decentralized-autonomous-organizations-overview-2e752e194c5b https://medium.freecodecamp.org/token-network-effects-a-new-business-model-for-a-decentralized-web-6cde8b4e862 https://www.fastcompany.com/3047462/the-humans-who-dream-of-companies-that-wont-need-them Join us in the Wizards Slack channel: http://wizards.herokuapp.com/ And please support me on Patreon: https://www.patreon.com/user?u=3191693 Instagram: https://www.instagram.com/sirajraval/ Instagram: https://www.instagram.com/sirajraval/ Signup for my newsletter for exciting updates in the field of AI: https://goo.gl/FZzJ5w
Views: 13666 Siraj Raval
Blockchain 101 Ep 21 - The digital signature of Bitcoin
The digital signature can only be generated by the Bitcoin sender. It’s a series of tamper-proof code. By verifying this code, it proves that the transaction was initiated by the sender and not altered during the process. Digital signature employs Digital Digest and Asymmetric Cryptography. Digital Digest compresses the information to a fixed length of code, then uses the private key to encrypt it, forming a digital signature. After completion, it groups the transaction message with the signature and send it to the miners. Miners use the sender’s public key for verification. If it’s valid, it means he did initiate the transaction and it remains unaltered. Asymmetric cryptography refers to using the private key for encryption and public key for decryption. It seems complicated but all you need to do is to enter the private key and voilà!. Watch the video here! Huobi Pro will post a question in our Tweet via our Twitter account (https://twitter.com/Huobi_Pro) each time we put up an episode of Blockchain 101 post on our Twitter account, we will randomly select 20 people who answered in the format [UIDxxxxxxxx, correct answer] and retweet our post will be entitled to 1 HT each. Note that the UID entered MUST be a valid Huobi registered account. What are you waiting for? Fastest fingers first! Grab your HT now!
Views: 604 Huobi Global
The A.I. Takeover Is Here! Should We Fear Artificial Intelligence?
John Lennox AI discussion starts at 22:30 - This is the shortened version. On Oct. 9, 2018, John Lennox addressed the critical questions surrounding artificial intelligence and how the future of artificial intelligence bears on a Christian vision of reality. Full 2 hour + video here: https://www.youtube.com/watch?v=njU4u2hMFnE John Carson Lennox is a Northern Irish mathematician specializing in group theory, a philosopher of science and a Christian apologist. He is Emeritus Professor of Mathematics at the University of Oxford and an Emeritus Fellow in Mathematics and Philosophy of Science at Green Templeton College, Oxford University. Born: November 7, 1943 (age 74 years), Northern Ireland, United Kingdom Field: Mathematics ........................................ Also thanks to - BABYLON WATCH - Exposing Mystery Babylon for other content in video - https://www.youtube.com/channel/UCs-Fvok5Pu-8-kOtvpljl9Q ........................................ The Word of God in Creation, Part 1 - https://www.rzim.org/listen/let-my-people-think/the-word-of-god-in-creation-part-1 The Word of God in Creation, Part 2 - https://www.rzim.org/listen/let-my-people-think/the-word-of-god-in-creation-part-2 Master Masons Building Their Counterfeit Kingdom - https://youtu.be/gkmoyxmAPiE Do your own research on this content. Don't take our word or anyone's word as the final say for this subject matter. We do not claim to have all the answers and like yourselves are filtering through everything to get to the truth day by day. We try to present as much quality information as possible to help give you starting points to research. Take everything back to the Word of God. Pray for discernment and let the Holy Spirit guide you to the truth. Jesus Saves! Follow Him! God bless you and your families. New videos are posted daily. Subscribe to our channel: http://www.youtube.com/c/ShakingMyHeadProductions ///////
DEF CON 22 - Ladar Levison and Stephen Watt - Dark Mail
Dark Mail is not the only solution in the secure mail space, but just as Lavabit’s preoccupation with privacy and user autonomy was a rarity when it started over a decade ago, it hopes once again to push mail security forward into a new frontier. It is Dark Mail's objective to achieve the highest degree of security possible - with the introduction of an interoperable mail protocol as an open standard. To that end, we are publishing documents describing the protocol, along with a reference implementations of the client and server under a free software license.
Views: 33332 DEFCONConference
IOHK | Developing a secure proof of stake algorithm
Prof Aggelos Kiayias is the Chair in Cyber Security and Privacy at the University of Edinburgh. His research interests are in computer security, information security, applied cryptography and foundations of cryptography with a particular emphasis in blockchain technologies and distributed systems, e-voting and secure multiparty protocols as well as privacy and identity management. https://iohk.io/team/aggelos-kiayias/ Developing a secure proof of stake algorithm is one of the big challenges in cryptocurrency, and a proposed solution to this problem won the attention of the academic community. Several hundred cryptographers from around the world arrived at the University of California Santa Barbara on Sunday for the flagship annual event of their field, Crypto 2017. Over several days, they present cutting edge research for the scrutiny of their peers, while in the evenings they continue discussions with friends and colleagues over dinner on the university campus, with the inspiring backdrop of the Santa Ynez mountains meeting the Pacific ocean behind them. https://iohk.io/press/ Ouroboros, developed by a team led by IOHK chief scientist Aggelos Kiayias, made it through a tough admission process for the prestigious conference. This year, 311 papers were submitted and of those 72 were accepted. Only three papers at the conference were on the subject of blockchain. All three papers were supported by IOHK funding. Speaking after his presentation, Professor Kiayias said: “We’re very happy that we had the opportunity to present Ouroboros at the conference. The protocol and especially its security analysis were very well received by fellow cryptographers.” “Our next steps will be to focus on the next version of the protocol, Ouroboros Praos which improves even further the security and performance characteristics of the protocol.” The Ouroboros protocol stands out as the first proof of stake algorithm that is provably secure, meaning that it offers security guarantees that are mathematically proven. This is essential for a protocol that is intended to be used in cryptocurrency, an infrastructure that must be relied on to carry billions of dollars worth of value. In addition to security, if blockchains are going to become infrastructure for new financial systems they must be able to comfortably handle millions of users. The key to scaling up is proof of stake, a far more energy efficient and cost effective algorithm, and as such this research represents a significant step forward in cryptography. Ouroboros also has the distinction of being implemented – the protocol will be an integral part of Cardano, a blockchain system currently in development. https://iohk.io/research/papers/#XJ6MHFXX https://iohk.io/projects/cardano/ There were two other papers presented at the bitcoin session on Monday. The Bitcoin Backbone Protocol with Chains of Variable Difficulty, was produced by a team of three researchers and included Prof Kiayias. It is a continuation of previous research into Bitcoin, which was itself the first work to prove security properties of its blockchain. A third paper on the subject of bitcoin was presented, Bitcoin as a Transaction Ledger: A Composable Treatment. Other notable talks at the conference included a presentation by John Martinis, an expert on quantum computing and former physics professor at the University of California Santa Barbara, who is now working at Google to build a quantum computer. Leading cryptographers at the conference included Whitfield Diffie, pioneer of the public key cryptography that made Bitcoin possible, and Ron Rivest, Adi Shamir, and Leonard Adleman, who came up with the RSA public-key cryptosystem that is widely used for secure data transmission. https://www.forbes.com/sites/amycastor/2017/08/23/at-crypto-2017-blockchain-presentations-focus-on-proofs-not-concepts/#6e558d1a7b70 https://iohk.io/team/aggelos-kiayias/ https://iohk.io/team/bernardo-david/ https://iohk.io/team/peter-gazi/ -- Input Output See more at: https://iohk.io Get our latest news updates: https://iohk.io/blog/ Meet the team: https://iohk.io/team/ Learn about our projects: https://iohk.io/projects/cardano/ Read our papers: http://iohk.link/paper-ouroboros Visit our library: https://iohk.io/research/library/ In the press: https://iohk.io/press/ Work with us: https://iohk.io/careers/ See more on Cardano: https://iohk.io/projects/cardano/ --
Views: 1358 IOHK
Stanford Computer Forum: Applications of VRF by Dominic Williams (String Labs)
Dominic Williams, CTO of String Labs, presents at Stanford Computer Forum on applications of Verifiable Random Function (VRF). = Abstract = We argue that a source of unmanipulable and unpredictable random values provides the most effective means to drive and organize decentralized networks and their higher-level applications. We demonstrate this idea by introducing two ingenious systems. Firstly we review how a network can use a “Threshold Relay” system that applies unique deterministic threshold signature cryptography (Dan Boneh’s BLS signature scheme) as a VRF to produce such a sequence of random values, further exploring how a robust high performance blockchain can be built upon the framework. Then we review how a network created using Threshold Relay can host “smart contract” software implementing an autonomous commercial banking system that applies generated randomness to give out loans algorithmically. String Labs is currently incorporating both methodologies into the DFINITY and Phi projects.
Views: 1118 Tom Ding
George Musser: "Spooky Action at a Distance" | Talks at Google
Over the past few decades, physicists have discovered a phenomenon that operates outside the confines of space and time: nonlocality - the ability of two particles to act in harmony no matter how far apart they may be. Einstein grappled with this oddity and couldn't come to terms with it, describing it as "spooky action at a distance." More recently, the mystery has deepened as other forms of nonlocality have been uncovered. This strange occurrence, which has direct connections to black holes, particle collisions, and even the workings of gravity, holds the potential to undermine our most basic understandings of physical reality. If space isn't what we thought it was, then what is it? In this talk "Spooky Action at a Distance: The Phenomenon That Reimagines Space and Time--and What It Means for Black Holes, the Big Bang, and Theories of Everything", George Musser sets out to answer that question, offering a provocative exploration of nonlocality and a celebration of the scientists who are trying to explain it. He traces the often contentious debates over nonlocality through major discoveries and disruptions of the twentieth century and shows how scientists faced with the same undisputed experimental evidence develop wildly different explanations for that evidence.
Views: 15276 Talks at Google
Securing the Connected Car
Securing the Connected Car - Eystein Stenberg, Mender.io Using recent real-world stories, Eystein Stenberg, Product Manager at Mender.io, will discuss the opportunity of connected cars and walk the audience through the following: * Opportunities OEMs have for connected vehicles, as demonstrated by Tesla’s ability to provide over-the-air (OTA) software updates that Elon Musk claims has reduced the chances of having an accident by 50%. It also provided Tesla with new revenue streams via the Autopilot's suite of autonomous driving functions. * The anatomy of the Jeep Cherokee hack: the technical details of how the Jeep Cherokee was hacked and steps you can take to reduce your attack surface. We will detail what Charlie Miller and Chris Valasek revealed and how they gained control of the car remotely, as ewll as provide specific security strategies. * Best practices on delivering over-the-air software updates with failover management. About Eystein Stenberg Eystein Stenberg has over 7 years of experience in security and systems management as a developer, support engineer, technical account manager, product manager and now as a CTO. He has been in the front line of some of the largest production environments in various roles and has in-depth knowledge of the challenges in systems security in a real-world context. Eystein has spoken at various conferences, including Embedded Linux Conference, Embedded Systems Conference, Automotive Linux Summit, and Internet of Things World. He holds a Masters degree in cryptography and his writing credits include "Distributing a Private Key Generator in Ad Hoc Networks."
What is the meaning of running a lightweight node?
Lightweight node is a type of node in which there is no need for downloading the complete Blockchain ledger for participating in the Blockchain network. Subscribe to our channel to learn more about Cryptocurrencies and Blockchain Technology. To get certified as a Blockchain Generalist and Ethereum Developer visit Blockchain Semantics. Blockchain Semantics is Asia’s largest Blockchain tutorial. We have been working on Blockchain and realized that there is a great dearth of Blockchain knowledge. Thus we have created video tutorials for people who want to learn Blockchain. Anyone can learn Blockchain from our video and can develop a DApp using Solidity on Ethereum. Introduction to Blockchain and Bitcoin This Course helps students get a thorough understanding of the basics of Blockchain, giving them a solid foundation that they can build careers upon, then move to advanced knowledge, teaching them how they can implement Blockchain technology in real-life use-cases. This course is ideal for: • Employees who would like to use Blockchain technology in their work • Students who wish to implement Blockchain in their projects • Investors who want a greater understanding of the industry • Entrepreneurs who see an opportunity for business in this technology • Product managers • Industry leader Consultants Ethereum Developer Course for developing decentralized applications on Ethereum using solidity. Solidity is a high-level programming language designed for writing smart contracts on the Ethereum Blockchain. It has a syntax similar to that of JavaScript making it easier to understand and implement for beginner level programmers. Coding is done on the basis of rules of the Ethereum Virtual Machine, the compiler for the "Ethereum World Computer". The series of lectures in this course will take you through the basics of the Ethereum Blockchain and its EVM architecture and as this course ends, you will feel empowered writing DApps on Ethereum using Solidity. You will be able to make your very own smart contracts and deploy it successfully over the Ethereum Blockchain Network. This course is regularly updated keeping in mind the developments happening on core Ethereum network itself. It takes a step-by-step approach to teaching students how to build their decentralized apps. It also includes one-on-one live doubt clearing sessions for aspirants to clear all of their doubts. The Ethereum Developer course is suitable for people who know the basics of Javascript, Angular JS, web development, Ajax Request, Gulp/Grunt and the Node, Package Manager. These concepts are built on throughout the classes. By the end of the course, students will: • Learn fundamental Ethereum Blockchain concepts, terminologies, and basic functionality to build and deploy smart contracts on the Ethereum network. • Identify ways in which smart contracts made on Ethereum Blockchain can be used to provide a more sophisticated alternative to traditional contracts by developing a more robust, secure and faster system. • Write smart contracts using Solidity. • Build end-to-end distributed applications on Ethereum. • Use Decentralized applications to replicate popular use cases like: Land Registry system Trade Finance applications Supply chain system Initial Coin offerings for tokens developed using ERC-20 token standards Investing in Bitcoin and cryptocurrencies: Cryptocurrencies have gained the attention of investors. There has been a lot of investment in cryptocurrency. And people are making money out of it. For example, if you would have invested in Bitcoin in January 2017, now it would have been 12 times your investment. There are several other cryptocurrencies which have grown 100 times and THAT’s HUGE! One of the examples is Dash. Cryptocurrency market is highly volatile, its prices rise and drops very quickly. There have been many questions about which cryptocurrencies to buy, when to buy and sell, how to invest in ICOs and is mining profitable? This course answers all the questions that one needs to know before investing in cryptocurrencies. This course is designed for the beginners who have no investing knowledge in the crypto world. In this course, you will understand: What is Blockchain and how it works What is cryptocurrency, altcoins What are the top cryptocurrencies What is the risk involved in the crypto world How to analyze the market and make a profit How to invest in ICOs and mining How to research and find good cryptocurrencies to invest Website: https://www.blockchainsemantics.com/ Facebook: https://business.facebook.com/Blockchain-Semantics-989004304572982 Twitter: https://twitter.com/blockchain_sem Linkedin: https://www.linkedin.com/company/blockchain-semantics
Lecture on Decentralized AI by Gene Kogan
Blockchains and deep learning are two of the most promising technologies to emerge in recent years. As Bitcoin has dispersed into dozens or hundreds of viable cryptocurrencies, startups and venture capitalists are beginning to consider other alternative use cases of blockchains as a means of decentralized consensus. Meanwhile, major sectors of the financial industry, transportation infrastructure, and social media are increasingly dominated by machine learning algorithms, and AI is gradually augmenting or automating various human faculties. The influence of both of these technologies is further expanded by more of our everyday appliances getting connected to the internet and accumulating data. A primordial soup of ingredients for widespread decentralized AI is forming, and many are beginning to speculate about its potential; is it a libertarian panacea to an unjust society, or a totalitarian nightmare with no off-switch? Gene Kogan is an artist and a programmer who is interested in generative systems, artificial intelligence, and software for creativity and self-expression. He is a collaborator within numerous open-source software projects, and leads workshops and talks on topics at the intersection of code and art. Gene initiated and contributes to ml4a, a free book about machine learning for artists, activists, and citizen scientists. He regularly publishes video lectures, writings, and tutorials to facilitate a greater public understanding of the topic. Slides: https://docs.google.com/presentation/d/1RI6BnBsJtTBg3djZbD1hDjuhQagPBAUtAqcqoYWQTxU/edit?usp=sharing 2:20 Why decentralized and AI are relevant to each other 7:28 Overview of deep learning 17:15 Problems with centralized machine learning 22:26 What decentralization is and isn't 29:27 Problems with the web today 37:48 First generation peer-to-peer networks 42:50 Applications of cryptography 49:24 Decentralizing the web; storage, transport, & computation 1:02:04 Smart contracts and automation 1:05:59 Decentralized autonomous organizations (DAO) 1:12:22 DAO examples and use cases 1:22:10 AI DAOs 1:31:15 Decentralizing machine learning & OpenMined protocol 1:34:14 Federated learning & homomorphic encryption 1:42:38 Learning through smart contracts and oracles 1:50:40 Open questions
Views: 879 HasGeek TV
Decentralized Autonomous Organizations
Joris Bontje sheds a light on the possibilities of Decentralized Autonomous Organizations (DAO) on Ethereum. Ethereum - https://www.ethereum.org/ Amsterdam Ethereum Meetup - http://www.meetup.com/Amsterdam-Ethereum-Meetup/ Joris Bontje - https://twitter.com/mids106 Music: Electrodoodle by Kevin MacLeod (incompetech.com)
Views: 3007 EtherCasts
Bitcoin Q&A: Do "crypto-banks" threaten hard money?
Do custodial "crypto-banks" and systems threaten bitcoin's potential as hard money, and the financial stability of nations? Being a banker, having a banking license, or being a financial regulator makes you a great thief. Can blockchains change governance in governments? People are misusing the term "blockchain" to mean "database," and fundamentally their business models are not about decentralisation. The problems in democracy have more to do with voter disenfranchisement and apathy about the blue vs. red Goldman Sachs. These questions are from from a talk which took place on October 11th 2018 as part of the three-day HoshoCon event at Hard Rock Hotel in Las Vegas, Nevada: https://www.hoshocon.com If you want early-access to talks and a chance to participate in the monthly live Q&As with Andreas, become a patron: https://www.patreon.com/aantonop RELATED: Measuring Success: Price or Principle - https://youtu.be/mPMsbgWl9p4 Why Open Blockchains Matter - https://youtu.be/uZPIz3ArQww Decentralised Globalisation - https://youtu.be/QoiR4aNbTOw Investing in Education instead of Speculation - https://youtu.be/6uXAbJQoZlE Beyond Price: Bitcoin's Impact on the Future - https://youtu.be/rvwVbRQ5Ysc Why I'm against ETFs - https://youtu.be/KSv0J4bfBCc Regulation and the bank boycott - https://youtu.be/8ypH69Cb1l0 Wallet design and mass adoption - https://youtu.be/WbZX6BDZJHc Mass adoption and peer-to-peer commerce - https://youtu.be/n9qIAEFS-Qs Scaling strategies and adoption - https://youtu.be/dML1a_Ek9Kw Price volatility and store of value - https://youtu.be/wzzZT95ijTo Why I earn bitcoin instead of buying - https://youtu.be/Ci7TyD8jETY Job opportunities with cryptocurrencies - https://youtu.be/89_p4pDlQtI Inspiring cryptocurrency projects - https://youtu.be/WW8norCKUbE From barter to abstract money - https://youtu.be/KYsppZoHguQ Crossing the chasm of theoretical vs. real need - https://youtu.be/yIR0OBEAaUE Remittances and smuggling in Venezuela - https://youtu.be/RRXecXfWARw How long until mainstream adoption? - https://youtu.be/y3cKBDBabtA What is the biggest adoption hurdle? - https://youtu.be/jHgyHF3F2TI Bitcoin as everyday currency - https://youtu.be/xYvvSV4mjH0 Hyperbitcoinization - https://youtu.be/AB5MU5fXKfo Why permissioned blockchains fail - https://youtu.be/GEQzlJ_WL-E How to avoid re-creating systems of control - https://youtu.be/EfoGnDoaBL8 Is bitcoin testing governments? - https://youtu.be/UfRGo2LAIpo Andreas M. Antonopoulos is a technologist and serial entrepreneur who has become one of the most well-known and respected figures in bitcoin. Follow on Twitter: @aantonop https://twitter.com/aantonop Website: https://antonopoulos.com/ He is the author of two books: “Mastering Bitcoin,” published by O’Reilly Media and considered the best technical guide to bitcoin; “The Internet of Money,” a book about why bitcoin matters. Subscribe to the channel to learn more about Bitcoin & open blockchains; click on the red bell to enable notifications about new videos! MASTERING BITCOIN, 2nd Edition: https://amzn.to/2xcdsY9 Translations of MASTERING BITCOIN: https://bitcoinbook.info/translations-of-mastering-bitcoin/ THE INTERNET OF MONEY, v1: https://amzn.to/2ykmXFs THE INTERNET OF MONEY, v2: https://amzn.to/2IIG5BJ Translations of THE INTERNET OF MONEY: Spanish, 'Internet del Dinero' (v1) - https://amzn.to/2yoaTTq French, 'L'internet de l'argent' (v1) - https://www.amazon.fr/Linternet-largent-Andreas-M-Antonopoulos/dp/2856083390 Russian, 'Интернет денег' (v1) - https://www.olbuss.ru/catalog/ekonomika-i-biznes/korporativnye-finansy-bankovskoe-delo/internet-deneg Vietnamese, 'Internet Của Tiền Tệ' (v1) - https://alphabooks.vn/khi-tien-len-mang MASTERING ETHEREUM (Q4): https://amzn.to/2xdxmlK Music: "Unbounded" by Orfan (https://www.facebook.com/Orfan/) Outro Graphics: Phneep (http://www.phneep.com/) Outro Art: Rock Barcellos (http://www.rockincomics.com.br/)
Views: 5990 aantonop
6 Things You Didn't Know About a Blockchain
Blockchain explained! Here’s how to understand the blockchain & the technology behind Bitcoin & cryptocurrency. A blockchain is essentially a super secure form of record-keeping. It’s made up of a list of digital transactions, information, data, or whatever else you can think of, that are grouped together in “blocks” then added to a row of past blocks to form a “chain,” hence the name “blockchain.” What powers the blockchain is a network of computers (or nodes) working together to verify each transaction & adding it to the chain of blocks so it’s viewable to the public & can’t be changed or edited retroactively. This makes it virtually impossible for human error to ever occur, therefore ensuring the blockchain’s long-lasting integrity. Blockchains operate autonomously, meaning they’re self-governed & their actions are carried out without any outside control or influence whatsoever. In the case of Bitcoin, it solves the problem of double-spending by ensuring that each unique transaction doesn’t occur more than once. Like I said earlier, data on the blockchain is resistant to any modifications. The only time it can be retroactively altered is when a majority of the computers in the network agree to let these modifications take place. But doing so consequently alters subsequent blocks. If I wanted to send you $1,000 using a traditional bank wire, I’d have to pay between $35-$45 in fees & wait between 3-5 business days for you to get your money. It’s because blockchain technology’s autonomous nature allows for transactions to take place directly from one person to another without the need for third-party services to regulate the transaction. It simply facilitates the transaction for cheaper & faster. It’s also extremely secure. Not only is its foundation based on cryptography, but its decentralized nature means there’s no single access point in which hackers can exploit it, making vulnerabilities within the system practically non-existent. Basing it in one specific location makes it “centralized.” Blockchains are “decentralized,” meaning their information is stored on thousands, if not, millions, of network computers all across the globe. Any hacker looking to taint the data would have to access each & every one of these computers at the same exact time! Ledgers based on blockchain technology are also open & public, making them easily verifiable. Anyone can view any transaction for any amount at any time, while still keeping user identity anonymous. Additionally, it’s designed to check in with itself in a sort of self-auditing manner. Satoshi Nakamoto was the first to conceptualize & implement blockchain technology when he introduced Bitcoin to the public. As I said before, the Bitcoin blockchain is upheld by a network of nodes that verify each & every transaction in a process as “mining.” Mining involves setting up a computer & connecting it to Bitcoin’s blockchain network using a client designed specifically for validating & relaying transactions. Once connected, the computer is automatically required to download a copy of the entire blockchain. It’s at this point that the computer can begin solving complex mathematical puzzles to verify transactions in a process called “proof-of-work.” Once a puzzle has been solved, the transaction is added into a block, a new copy of the ledger is distributed to the entire network, & the miner is rewarded with a certain amount of Bitcoin. Now, say you’ve sent me 1 BTC, the transaction has been verified, & it’s been added to the latest block; since then, another newer block has been created & added to the chain. It’s said that the block in which our transaction can be located is “1 block deep.” Most merchants & exchanges won’t consider the transaction confirmed until it’s 6 blocks deep or more. Doing so prevents any possibility of double-spending from occurring. These days, a new group of BTC transactions is accepted & formed into a block every 10 minutes on average. There are currently over 1,100 new cryptocurrencies available, most of which use different technology. Bitcoin’s primary function is a transfer of value directly from one person to another...but that’s just the tip of the iceberg. One such other cryptocurrency is Ethereum, which we’ll discuss in further detail later since it warrants its own video. To give you the gist of it though, Ethereum allows for smart contracts to function & also acts as a platform for developers to create & deploy other decentralized applications aka “Dapps.” Storj will take your photos, break each photo up into smaller files, encrypt each file for safety & security purposes, then distribute them to be stored across other hard drives within the Storj network. Disclaimer: This is not financial advice. I absolve myself of all responsibility (directly or indirectly) for any damage, loss caused, alleged to be caused by, or in connection with the use of or reliance on any content, goods or services mentioned in this article. As usual, DYOR.
Substratum Versions, SUBLOCC #1 Report, New Hire & Leadership Meetup
Hello Substratum Nation… Today we are dropping you a CLASSIC Substratum update. We have a lot to report and some amazing things we want to cover but first we want to say a special thank you to YOU, the community. There are a lot of projects in the blockchain space so we are so grateful to have a community that is passionate and engaged. We NEED YOUR HELP to change the way the world communicates with our solution so thank you for being part of Substratum. 1. VERSIONS When the founders put together the initial plan for Substratum the original white paper included ONLY a Beta and a Production release. As things progressed we found that through doing small and frequent builds we could achieve a better product. As you know our goal is mainstream adoption and to do that you have to be able to deliver AT SCALE and it is better to solve the problems that exist at scale early and we use small, frequent releases to come to those solutions. We did our first SUCCESSFUL unscheduled Alpha Test in November and are working on our second unscheduled Alpha Test now. Through all this there has been a LOT of confusion in the community in regards to Alpha vs Beta vs Production and that is something that we want to clear up and the way we are going to do that is with version numbers. We use version numbers inside our office to CLEARLY communicate and want to be able to communicate those EXACT SAME version numbers directly to you. Our version number format consists of 3 integers separated by periods. An example would be version 1.2.0. In this example, 1 is equivalent to a major version, 2 is equivalent to a minor version, and 0 is a patch release for the major/minor. You can see this versioning system in ALL major software products such as macOS or Windows. The first PRODUCTION release of Substratum will be version 1.0.0. Currently, we are working on version 0.2.0, which includes these components within substratum node: neighborhoods, proxy server, proxy client, hopper, and a dispatcher. We ensured the existing entry DNS component continued to work on Windows builds after a bug was discovered. We also stubbed out a cryptography layer to apply cryptography into routing for a later release. (More information on this and other features will be available in our release notes.) Most importantly, each version will be communicated with correlating feature details. (We do not yet know how many minor versions there will be before we release the first major version. For example, we could go from 0.6.0 to 1.0.0, or 0.11.0 to 1.0.0. However, we will keep you updated as we progress.) An additional reason this is important is because of our rolling release model. Once the public release is available, we will be rolling out frequent feature updates as they are completed so that you always have the latest and greatest software. This means, once public, there will be no more waiting for major releases. 2. SUBLOCC Our first SUBLOCC was a great success. We had over 40 people attend, and discussed cryptocurrency in general, the industry of ICO’s and software development. We had discussions (both technical and product related) about Substratum, as well as our team members backgrounds. As a group we determined the format and structure of future meetings. We ended the night with breakout groups, all having different discussions. We will be scheduling the next SUBLOCC shortly and we hope you can make plans to be there. This will become a monthly event and we are in the process of making plans to scale this out to not only the Columbus area but worldwide. 3. NEW HIRES We’ve officially hired another developer who will be starting Monday January 29th. Her name is Kristen. She is a software engineer with a passion for Internet of Things and software craftsmanship. Kristen has a background in team coaching and experience with autonomous vehicles. Welcome Kristen. 4. LEADERSHIP PLANNING This week the Substratum Leadership Team will be meeting in Orlando to discuss the future roadmap of Substratum. Make sure you stay tuned to Social Media for updates from the leadership team. That’s it for today! Again we thank you for being a part of our community. We couldn’t do it without you. Make sure you like, subscribe and share so you can get the latest updates as they happen as we bring you the free & fair internet of tomorrow through the power of the decentralized web.
Views: 5685 Substratum Network
EB141 – Ralph Merkle: Revolutionizing Democracy Using DAOs
Support the show, consider donating: 1JiYLskKV4JcS4RuXQqJwC7LCmwmvuXoen (http://bit.ly/2amTtOL) Legendary scientist and cryptography pioneer Ralph Merkle joined us to discuss his recent paper on DAOs. Merkle examined how the voting mechanisms in today's democracies are flawed and how a decentralized, transparent DAO making decisions using prediction markets could create more efficient democratic systems. Topics covered included: - Merkle proofs, Merkle Roots and his early forays into cryptography - Blockchains as living organisms - Why DAOs will be subject to a Darwinian evolutionary process - Why voting is flawed and we need new governance methods to save democracy - The concept of a DAO democracy - How prediction markets and futarchy would help govern a DAO democracy Links mentioned in this episode: - Ralph Merkle DAO Democracy Paper [PDF] http://bit.ly/29XR7RG - Ralph Merkle's Homepage http://bit.ly/2anLaPA - Ralph Merkle's Wikipedia page http://bit.ly/2am6xE6 - EB98 - Robin Hanson: Futarchy, Prediction Markets http://bit.ly/2aE3djy - Tim Urban: Why Cryonics Makes Sense http://bit.ly/2akC6MV - Alcor - Life Extension Foundation http://bit.ly/2a9P7IM Sponsors: - Hide.me: Protect your privacy and personal data with a free VPN account at Hide.me/epicenter - Ledger Nano: Smart card security for your Bitcoins - Get 10% off your first order when you use the code EPICENTER at http://ledgerwallet.com Show notes: http://epicenterbitcoin.com/podcast/141 SoundCloud: http://soundcloud.com/epicenterbitcoin/eb-141 Epicenter Bitcoin is hosted by Brian Fabian Crain, Sébastien Couture & Meher Roy. - Visit our website: http://epicenterbitcoin.com - Subscribe to our newsletter: http://epicenterbitcoin.com/newsletter - Twitter: http://twitter.com/epicenterbtc
Views: 5302 Epicenter
How does traceroute work?
traceroute is one interesting tool enabled by ICMP. And the way that it works also illustrates an interesting feature of the IP packet header—​the time to live (TTL) field. Credits: Talking: Geoffrey Challen (Assistant Professor, Computer Science and Engineering, University at Buffalo). Producing: Greg Bunyea (Undergraduate, Computer Science and Engineering, University at Buffalo). Part of the https://www.internet-class.org online internet course. A blue Systems Research Group (https://blue.cse.buffalo.edu) production.
Views: 28929 internet-class
DAO- Decentralized Autonomous Organizations: Can You Trust a Blockchain?
Speakers: Clément Epié (Cellabz) Primavera de Filippi (CNRS/Harvard) Moderator: Benjamin Tincq (OuiShare) This session will address the question of trust (or "trustlessness") and how it relates to the question of human autonomy and agency. Decentralized Autonomous Organizations (DAOs) are organizations operated on blockchain-based smart contracts which aim at removing the need for control measures to ensure trust. Can you trust a DAO that is completely autonomously operated? If not, can you trust the people who are operating it? How can a "trustless" technology like the blockchain bridge the gap between these 2 figures? How much agency should be given to a DAO? How to ensure that it does not take away human agency? http://ouisharefest.com
Views: 1578 Ouishare TV
What is Blockchain? | CNBC Explains
Blockchain is a global online database that anyone with an internet connection can use, but it doesn't belong to anyone. CNBC's Tom Chitty explains. ----- Subscribe to CNBC International: http://bit.ly/1eiWsDq Like our Facebook page https://www.facebook.com/cnbcinternational Follow us on Instagram @cnbcinternational Follow us on Twitter https://twitter.com/CNBCi Subscribe to our WeChat broadcast CNBC_international
Views: 228250 CNBC International
How to pronounce bitcoin
How do you say bitcoin? Watch our video to find out the pronunciation, and read what the word means at http://www.oxforddictionaries.com/definition/english/bitcoin.
Views: 5016 Oxford Dictionaries
USENIX Enigma 2018 - Least Privilege: Security Gain without Developer Pain
Travis McPeak, Sr. Security Engineer at Netflix The principle and benefits of Least Privilege are long established in Computer Security—dating back to the 1970s. Despite this it is far from universally adopted. Technologies used to define and enforce Least Privilege policy are arcane to most in the computing industry. Software developers are incentivized to ship products and features, so they focus on what helps them work fast: wildcards in policies, if they even have one. Traditional attempts to counter this typically require system administrators or security staff to perform manual reviews and craft security policies in response. As application complexity and development velocity increase it becomes impractical to manually determine Least Privilege ahead of time. A central policy gatekeeper doesn't scale efficiently and is likely to negatively impact delivery velocity. Our approach at Netflix combines gathering data about how applications interact with their environment and automatically adjusting the permissions in their security policy. Unused permissions are automatically removed from application policies across our environment without manual effort from developers or the security team. This approach gives us the best of both worlds: the security team gets least privilege policies and developers maintain high velocity. During this talk we’ll describe how this works in our environment, challenges we’ve overcome along the way, and recommend other applications for the same methodology. Sign up to find out more about Enigma at https://enigma.usenix.org
Who owns the Blockchain? Public, Private, Standards at NCC 2016
Taking a closer look at the different forms of blockchain (private, public, etc.), its respective merits, demerits, and current standardizations. Speech: Brian Behlendorf Speech: Sachiko Yoshihama Panel: Adam Levine (moderator) Christopher Allen, Brian, Sachiko, Shin'ichiro These remarks were part of NCC 2016: “The Social Impact of Blockchain” on Friday November 4th, 9am-6pm at DG717, 717 Market Street, San Francisco, CA 94103. This full day conference will explore the Social Impact of Blockchain technologies. Bitcoin, Blockchain, Ethereum - these buzzwords are migrating from geek slang to the dictionary as they define an independent architecture for human trust and exchange. Amidst news of discord and hacking, who is responsible for building a reliable distributed ledger? How can the architecture behind crypto-currency benefit the greatest number of earthlings? Friday 4 November at DG717 in San Francisco, we will take a look at how blockchain could evolve to support or supplant our existing social institutions: For more information about NCC, visit https://www.dglab.com/en/ncc/ Biographies for presenters: Shin’ichiro Matsuo, Ph.D. - Research Affiliate- Director's Liaison for Financial Cryptography, MIT Media Lab, Co-Founder, BSafe.network Dr. Shin'ichiro Matsuo is a research scientist in cryptography and information security based in Silicon Valley. He is working on maturing Blockchain technology from academia side. He is a research affiliate - Director's Liaison for Financial Cryptography at MIT Media Lab, research fellow at University of Tokyo and Chief Security Scientist at MagicCube Inc. He is an editorial team member of LEDGER, the first Blockchain academic journal and a program committee member of W3C Blockchains and the Web. Together with Mr. Pindar Wong, he is establishing the BSafe.network to promote applied academic research in blockchain technologies. He is the editor of three ISO/IEC standards. Dr. Matsuo founded CELLOS, the international consortium for security evaluation of cryptographic protocol and serves as the head of its technical working group for securing cryptographic protocol like TLS. Previously he served as the head of Japanese national body of ISO/IEC JTC1 SC27/WG2 for cryptographic techniques, a member of advisory board cryptographic technology for Japanese government. He is the member of IACR, IFCA. Adam B. Levine - CEO of Tokenly and the Editor-in-Chief of the Let’s Talk Bitcoin! show An entrepreneur, a frequent collaborator, asymmetrical strategist, and a tangential thinker, Adam’s other interests include additive manufacturing tech, autonomous systems, new interfaces, open source hardware, and improbable solutions to impossible problems that could change everything. Sachiko Yoshihama - Manager, Blockchain Technology, IBM Research – Tokyo Sachiko Yoshihama joined IBM T.J. Watson Research Center in 2001 after working as a software engineer in a Japanese company. She joined IBM Research – Tokyo in 2003 and worked on research in information security, and moved to the IBM Research Global Labs to define research strategies for developing countries with special focus on Smarter Cities. Currently she is leading the Blockchain Technology team at IBM Research – Tokyo to do research and development of industry solutions and tools using blockchain, and to create new businesses. Brian Behlendorf - Executive Director, Hyperledger Brian Behlendorf is the Executive Director of Hyperledger, a collaborative project at the Linux Foundation. Behlendorf was a primary developer of the Apache Web server, the most popular web server software on the Internet, and a founding member of the Apache Software Foundation. He has also served on the board of the Mozilla Foundation since 2003 and the Electronic Frontier Foundation since 2013. He was the founding CTO of CollabNet and CTO of the World Economic Forum. Most recently, Behlendorf was a managing director at Mithril, a global technology investment firm.
Views: 1115 DG Lab EN
MobiBar: an autonomous deployment algorithm for barrier coverage with mobile sensors
Deployment of 250 sensors starting from a random initial deployment
Views: 101 Simone Silvestri
34C3 -  Drones of Power: Airborne Wind Energy - deutsche Übersetzung
https://media.ccc.de/v/34c3-8877-drones_of_power_airborne_wind_energy Airborne wind energy is the attempt to bring the digital revolution to the production of energy. It means that we convert the power of high-altitude winds into electricity by autonomously controlled aircraft which are connected to the ground via a tether. This technology can be a key element to finally power the world by clean energy only. In this talk we will explain the physical foundations, give an overview of the current status and show you how to build an experimental system by yourself: it involves hacking an off-the-shelf model aircraft and its autopilot based on the open and free Ardupilot framework. It is hard to argue that energy is not the very heart of humankind’s major challenge. Up to now it is largely unscratched by a digital revolution -- the main power sources of the world are remarkably dumb. We are about to change this. In this talk, we will present what we think will disrupt energy production. We're not talking about retrofitting the power grid with yet some more insecure 'smart' component. This is about predictably available renewable energy called Airborne Wind Energy (AWE): autonomous flying drones at high altitudes can harvest the wind’s energy cheaper than any wind turbine, and most importantly: it can be done almost everywhere and almost all the time, solving the two major technological and geopolitical challenges of sustainable energy production, which has rattled the world for decades. We are convinced that humans should power the world by clean energy only, and we think AWE can be a key element to do just that. In this talk, we will cover the physical foundations, introduce a few of the control algorithms and the challenges associated with very strong forces acting on very light objects. We will also shed a light on the progress of leaders in the field such as Ampyx Power and Google Makani. But there is more to it: Using the `AWEsome' project, we will show you how to build an open source wind drone for yourself by hacking a model plane and its autopilot based on the open and free Ardupilot framework. While its energy production will be rather limited, it serves a lot of useful purposes: For example, it paves the way to test crazy new ideas of start, landing and flight modes on a cheap disposable platform and is a training playground for flight operations. Maybe by the time of the next Chaos Communication Camp, you will have joined us and we can fly our wind energy harvesting robots together -- and save the world, all at the same time. Christoph https://fahrplan.events.ccc.de/congress/2017/Fahrplan/events/8877.html
Views: 297 media.ccc.de
The Third Industrial Revolution: A Radical New Sharing Economy
The global economy is in crisis. The exponential exhaustion of natural resources, declining productivity, slow growth, rising unemployment, and steep inequality, forces us to rethink our economic models. Where do we go from here? In this feature-length documentary, social and economic theorist Jeremy Rifkin lays out a road map to usher in a new economic system. A Third Industrial Revolution is unfolding with the convergence of three pivotal technologies: an ultra-fast 5G communication internet, a renewable energy internet, and a driverless mobility internet, all connected to the Internet of Things embedded across society and the environment. This 21st century smart digital infrastructure is giving rise to a radical new sharing economy that is transforming the way we manage, power and move economic life. But with climate change now ravaging the planet, it needs to happen fast. Change of this magnitude requires political will and a profound ideological shift. To learn more visit: https://impact.vice.com/thethirdindustrialrevolution Click here to subscribe to VICE: http://bit.ly/Subscribe-to-VICE Check out our full video catalog: http://bit.ly/VICE-Videos Videos, daily editorial and more: http://vice.com More videos from the VICE network: https://www.fb.com/vicevideo Click here to get the best of VICE daily: http://bit.ly/1SquZ6v Like VICE on Facebook: http://fb.com/vice Follow VICE on Twitter: http://twitter.com/vice Follow us on Instagram: http://instagram.com/vice Download VICE on iOS: http://apple.co/28Vgmqz Download VICE on Android: http://bit.ly/28S8Et0
Views: 2885135 VICE
Vinay Gupta's vision on blockchain's influence in the next 10 year #BIC18
Vinay Gupta is the founder of Hexayurt.Capital, he managed the Ethereum blockchain platform release and he was an instrumental figure in creating the Dubai Blockchain Strategy. Predicting the future with regards to technology is a second nature for Vinay. Vinay was part of the cryptography wave from the eighties and according to him we are already living in the future that he predicted back then. Now, he gives his vision for the coming 10 years. How is blockchain going to change our lives? What aspects are important? Why is it in blockchain's nature to go against the establishment of Western world governance? Vinay Gupta will give an end talk on the Blockchain Innovation Conference 2018.
Views: 212 Vincent Everts
How to prevent cyber attacks? A webinar on enterprise cyber security
In this webinar you'll learn how to: 1) Adopt a proactive approach to cyber security 2) Detect vulnerabilities and keep your systems up-to-date 3) Keep your organisation secure with seamless patch management procedures
Views: 365 ManageEngine
An Introduction to Private Machine Learning - Singapore Python User Group
Speaker: Satish Shankar This talk will introduce the essential concepts from cryptography necessary to build AI systems that use sensitive data and yet protect our privacy. Specifically, we will cover concepts from secure multi-party computation (MPC) and how they can be used to build machine learning algorithms. Why does this matter? This matters because we as a society are struggling to balance the benefits of data driven systems and the privacy risks they create. Building any machine learning or analytics model necessitates the collection of data. If this data is sensitive or personal, it inevitably turns into an honeypot for hackers. At a societal level, we are responding to this issue by introducing more regulation such as the GDPR. Instead of regulations, it is possible to use cryptography to protect our data and still analyse it: This talk show how. About: Shankar leads the machine learning and AI efforts for Manulife’s innovation labs. He works on quantitative investment and insurance, drawing on a wide range of fields from machine learning, natural language processing, differential privacy, encryption, and more. He is particularly interested in the intersection of blockchains, distributed systems and privacy in machine learning. Event Page: https://www.meetup.com/Singapore-Python-User-Group/events/249344900/ Produced by Engineers.SG Help us caption & translate this video! https://amara.org/v/h7ZJ/
Views: 183 Engineers.SG
Introduction to Langdon Winner's "Do Artifacts Have Politics?" for Digital Culture Students
"Do Artifacts have Politics?" was published in 1980 and is a foundational article in digital culture studies. It discusses how technology influences culture and how culture/society/economics influence technology. This video is intended to give you an overview of Winner's article so it will be easier for you to read for yourself. It's primarily intended for Digital Culture students at the University of Bergen, but may be useful for other students as well.
Views: 1876 Jill Walker Rettberg
Items as Autonomous Agents in Combinatorial Auctions
We propose a fair mechanism for the type of auctions where the items themselves are autonomous agents, like the Indian Premier League (IPL) auctions. URL: https://sites.google.com/site/kalyansarun/projects/multi-agent-systems#isaac
Anish Mohammed - Zero Knowledge Protocols - Ethereum London
Anish has been working in the security and cryptography area for the past 15 years, as a researcher and as a consultant. Most recently he has been involved in the Blockchain ecosystem as one of the founding members of UKDCA . He is also on the advisory board for Adjoint, Ripple Labs and Chain of Things. These days he works for large UK bank where he is lead security architect of Blockchain initiatives. He is regular speaker and contributor on both Blockchain and Cybersecurity. (Apologies for the lower than usual sound quality, we had problems with the mikes, this will be resolved at the next meetup) -- Filmed at Ethereum London - March 2017 Follow us on twitter #ETHLDN https://www.meetup.com/ethereum/ https://twitter.com/hashtag/ethldn
Views: 633 Stephan Tual
OpenCL Optimization   3   Profiling OpenCL
Profiling the application to figure out where the OpenCL bottlenecks are. Issues with asynchronous OpenCL execution and profiling.
Views: 1447 David Black-Schaffer
Blockchain Basics - Blockchain Defined: Bitcoin & Blockchain by University at Buffalo
This video is part of an online course, Blockchain Basics, created by the University at Buffalo. Enroll today at https://www.coursera.org/learn/blockchain-basics?utm_source=yt&utm_medium=social&utm_campaign=channel&utm_content=suny to get access to the full course. About this course: This first course of the Blockchain specialization provides a broad overview of the essential concepts of blockchain technology – by initially exploring the Bitcoin protocol followed by the Ethereum protocol – to lay the foundation necessary for developing applications and programming. You will be equipped with the knowledge needed to create nodes on your personal Ethereum blockchain, create accounts, unlock accounts, mine, transact, transfer Ethers, and check balances. Visit https://www.coursera.org/learn/blockchain-basics?utm_source=yt&utm_medium=social&utm_campaign=channel&utm_content=suny to learn more! Specialization: https://www.coursera.org/specializations/blockchain?utm_source=yt&utm_medium=social&utm_campaign=channel&utm_content=suny Keep in touch with Coursera! Twitter: https://twitter.com/coursera Facebook: https://www.facebook.com/Coursera
Views: 69 Coursera
What is Ethereum? A Beginner's Explanation
Ever wondered what is Ethereum? We've just created the EASIEST Ethereum explainer video on the web :) What you will learn in this video? * What Ethereum is * How Bitcoin contributed to the concept of Ethereum * Ethereum's goal and the centralization of the Internet * What smart contracts are, their pros and cons * What is Ether - Ethereum's currency Special thanks to Jimmy Song who's post about Smart Contracts helped us a lot in creating this video: https://medium.com/@jimmysong/the-truth-about-smart-contracts-ae825271811f For the complete text guide visit: http://bit.ly/2RAjY4j Join our 7-day Bitcoin crash course absolutely free: http://bit.ly/2pB4X5B Learn ANYTHING about Bitcoin and cryptocurrencies: http://bit.ly/2BVbxeF Get the latest news and prices on your phone: iOS - https://apple.co/2yf02LJ Android - http://bit.ly/2NrMVw2 See anything we haven't covered? Leave us a comment in the comment section below
Views: 3580 99Bitcoins
Robotic Surgery
Skilled Surgeons and Precision Technology come together to perform a surgery with minimal blood loss at Apollo Hospital's Institute of Robotic Surgery. Watch this video to know more about Robotic Surgery.
Views: 4818 Apollo Hospitals
15x4 - 15 минут про криптоинвестирование
«Блокчейн изменяет финансовый мир. Почему? В этой лекции мы обсудим: Что такое блокчейн? Чем этериум отличается от биткоина и что такое умные контракты? Чем акции отличаются от краудфандинга и кредита? Чем ICO отличается от IPO?» – Александр Гапак https://vk.com/alex_gapak Слайды - https://goo.gl/cuUbCk 15х4 - это сообщество молодых ученых и фанатов науки. Мы хотим, чтобы люди выступали и делились знаниями. http://15x4.org http://vk.com/15x4talks http://twitter.com/15x4talks http://facebook.com/15x4talks http://instagram.com/15x4talks
Views: 30622 15x4 Talks
LTE Security  Protocol Exploits [ShmooCon 2016]
The Long Term Evolution (LTE) is the newest standard being deployed globally for mobile communications. Despite the well understood security flaws of legacy 2G networks, which lack of mutual authentication and implement an outdated encryption algorithm, LTE is generally considered secure given its mutual authentication and strong encryption scheme. To the day, the main cellular vulnerabilities being exploited in most IMSI catchers and stingrays are based on 2G base stations. Nevertheless, rogue base stations and protocol exploits are also possible in LTE. Before the authentication and encryption steps of a connection are executed, a mobile device engages in a substantial exchange of messages with *any* LTE base station (real or rogue) that advertises itself with the right broadcast information. And this broadcast information is sent in the clear and can be easily sniffed. This talk overviews my work on LTE protocol exploits ranging from full-LTE IMSI catchers, blocking of the SIM or the device until device reboot, severe battery drain, location leaks and low-power jamming. Some of these exploits have been previously released in some form and some others have not, such as a new way to track devices as they hand over from tower to tower. Roger Piqueras Jover is a Wireless Security Research Scientist at the Security Architecture team of Bloomberg LP. Previous to that, he spent 5 years as Principal Member of Technical Staff at the AT&T Security Research Center. His work focuses on LTE mobile network security, protocol exploits and exploring the security of anything that communicates wirelessly.
Views: 982 Michail S
Blockchain Technology | Blockchain Technology Explained | Blockchain Training | Edureka
** Blockchain Training : https://www.edureka.co/blockchain-training ** This Edureka's video on Blockchain Technology tells you why Blockchain is one of the leading technology in today's IT Industry and why should you learn it. This video also tells the key features and different platforms of this technology. Below are the topics covered in this tutorial: 1. Decentralized System 2. Financial Impact of Blockchain 3. Key Features of Blockchain 4. Innovations in Blockchain 5. Blockchain Development Platforms 6. Blockchain Applications 7. Blockchain Technology Demo: Decentralized Pet Shop Here is the link to the Blockchain blog series: https://goo.gl/DPoAHR Check out our Blockchain Tutorial Playlist: http://bit.ly/2PZb8fd Subscribe to our channel to get video updates. Hit the subscribe button above. Facebook: https://www.facebook.com/edurekaIN/ Twitter: https://twitter.com/edurekain LinkedIn: https://www.linkedin.com/company/edureka #Blockchain #Blockchaintutorial #Blockchainonlinetraining #Blockchainforbeginners How it Works? 1. This is a 4 Week Instructor led Online Course, 20 hours of assignment and 20 hours of project work 2. We have a 24x7 One-on-One LIVE Technical Support to help you with any problems you might face or any clarifications you may require during the course. 3. At the end of the training you will be working on a real time project for which we will provide you a Grade and a Verifiable Certificate! - - - - - - - - - - - - - - - - - About the Course Edureka's Blockchain Course is designed to introduce you to the concept of Blockchain and explain the fundamentals of blockchain and bitcoin. Blockchain course will provide an overview of the structure and mechanism of blockchain. As a beginner, you will be learning the importance of consensus in transactions, how transactions are stored on blockchain, history of bitcoin and how to use bitcoin. Furthermore, you will be taught about the Ethereum platform and its programming language. You will setup your own private blockchain environment using Ethereum. Also, you will develop a smart contract on private Ethereum blockchain and will be deploying the contract from web and console. The course is fed with various use-cases and examples, which makes the learning more interesting. After completing this Course, you should be able to: 1. Comprehend the cryptography and cryptocurrency concepts 2. Encompass the concept of blockchain 3. Understand the importance of blockchain technology 4. Have a deep insight into bitcoin and its network 5. Perceive, how bitcoin transactions are validated by miners 6. Create and use bitcoin account effectively 7. Understand Ethereum blockchain 8. Learn Solidity: Prominent language to develop smart contracts 9. Deploy your private blockchain on web where you can visually see your chains 10. Send transactions between nodes 11. Develop more than one nodes on same blockchain 12. Making your own cryptocurrency 13. Discuss the compelling use-cases of the blockchain 14. Interpret the prospects of blockchain. 15. Assess, how blockchain can improve your business standards. ----------------------------------- Who should go for this course? Anyone having basic programming knowledge and has a zeal to learn new technology can take up the course. Students and professionals aspiring to make a career in the Blockchain technology should opt for the course. ----------------------------------- Why learn Blockchain? Blockchain is a revolutionary technology. It is an ordered back linked-list data structure of blocks of transactions stored in a decentralized peer-to-peer network. It is the underlying infrastructure for bitcoin, a popular cryptocurrency. In near future, many companies will be adopting blockchain technologies for trading publicly. Apart from bitcoin, it can be used for a wide variety of applications such as tracking ownership, digital assets, physical assets, or voting rights. It can also store and run computer code called ‘smart contracts’. However, blockchain is still new and the communities are still exploring the best ways in which it can be used. For more information, please write back to us at [email protected] Call us at US: 18442306362 (toll free) or India: +919019117772
Views: 5795 edureka!
Bitcoin inside information for 2018 💰💰💰 | Bitcoin 5000 BVK
website: http://bitcoin5000.org exchange: graviex.net/markets/bvkbtc #bitcoin #bitcoin5000 #cryptocyrrency Bitcoin is a decentralized digital currency that enables instant payments to anyone, anywhere in the world. Bitcoin uses peer-to-peer technology to operate with no central authority: transaction management and money issuance are carried out collectively by the network. The original Bitcoin software by Satoshi Nakamoto was released under the MIT license. Most client software, derived or "from scratch", also use open source licensing. Bitcoin is the first successful implementation of a distributed crypto-currency, described in part in 1998 by Wei Dai on the cypherpunks mailing list. Building upon the notion that money is any object, or any sort of record, accepted as payment for goods and services and repayment of debts in a given country or socio-economic context, Bitcoin is designed around the idea of using cryptography to control the creation and transfer of money, rather than relying on central authorities. Bitcoins have all the desirable properties of a money-like good. They are portable, durable, divisible, recognizable, fungible, scarce and difficult to counterfeit. Bitcoin is P2P electronic cash that is valuable over legacy systems because of the monetary autonomy it brings to its users. Bitcoin seeks to address the root problem with conventional currency: all the trust that's required to make it work -- Not that justified trust is a bad thing, but trust makes systems brittle, opaque, and costly to operate. Trust failures result in systemic collapses, trust curation creates inequality and monopoly lock-in, and naturally arising trust choke-points can be abused to deny access to due process. Through the use of cryptographic proof, decentralized networks and open source software Bitcoin minimizes and replaces these trust costs. Bitcoin Transactions are: Permissionless and borderless. The software can be installed by anybody worldwide. Do not require any ID to use. Making it suitable for the unbanked, the privacy-conscious, computers or people in areas with underdeveloped financial infrastructure. Are censorship-resistant. Nobody is able to block or freeze a transaction of any amount. Irreversible once settled, like cash. (but consumer protection is still possible.) Fast. Transactions are broadcasted in seconds and can become irreversible within an hour. Online and available 24 hours a day, 365 days per year. Bitcoin can also be a store of value, some have said it is a "swiss bank account in your pocket". Stored Bitcoins: Cannot be printed or debased. Only 21 million bitcoins will ever exist. Have no storage costs. They take up no physical space regardless of amount. Are easy to protect and hide. Can be stored encrypted on a hard disk or paper backup. Are in your direct possession with no counterparty risk. If you keep the private key of a bitcoin secret and the transaction has enough confirmations, then nobody can take them from you no matter for what reason, no matter how good the excuse, no matter what.
Views: 1301 VnukElkina
How will Blockchains evolve? Advances in Academic Research at NCC 2016
Taking a different approach to blockchain - looking at the technology through an academic perspective. Speech: Ethan Heilman Speech: Shin'ichiro Matsuo Speech: Benedikt Bunz Panel: Elizabeth Stark (moderator), Ethan, Shin'ichiro, Benedikt Bunz These remarks were part of NCC 2016: “The Social Impact of Blockchain” on Friday November 4th, 9am-6pm at DG717, 717 Market Street, San Francisco, CA 94103. This full day conference will explore the Social Impact of Blockchain technologies. Bitcoin, Blockchain, Ethereum - these buzzwords are migrating from geek slang to the dictionary as they define an independent architecture for human trust and exchange. Amidst news of discord and hacking, who is responsible for building a reliable distributed ledger? How can the architecture behind crypto-currency benefit the greatest number of earthlings? Friday 4 November at DG717 in San Francisco, we will take a look at how blockchain could evolve to support or supplant our existing social institutions: For more information about NCC, visit https://www.dglab.com/en/ncc/ Benedikt Bünz - Stanford University Benedikt Bünz is a first-year PhD student at Stanford University. He previously received his Masters degree in Computer Science from Stanford and his undergrad degree from the University of Zurich. Benedikt’s research focusses on cryptography and applied security as well as incentives specifically in the area of cryptocurrencies. He is the co-author of the Provisions paper which enables Bitcoin exchanges to cryptographically proof their solvency while maintaining perfect privacy. Ethan Heilman - Researcher, Boston University Ethan Heilman is PhD student at Boston University's Computer Science Department and a member of the computer security research group BUSEC. His research includes novel attacks on hash functions including breaking a SHA-3 competitor, network security and Blockchains. Based on research he published he has contributed improvements to Bitcoin-Core which strengthen the security of Bitcoin's P2P network. His earlier adventures include developing bioinformatics software for the Broad Institute, building scalable software at two search engine startups (Jumptap and Pubget), and at the Geographics Lab helping design Cape Cod's Intelligent Transit System. His latest project is TumbleBit which allows for scalable private Bitcoin payments. Shin’ichiro Matsuo, Ph.D. - Research Affiliate- Director's Liaison for Financial Cryptography, MIT Media Lab, Co-Founder, BSafe.network Dr. Shin'ichiro Matsuo is a research scientist in cryptography and information security based in Silicon Valley. He is working on maturing Blockchain technology from academia side. He is a research affiliate - Director's Liaison for Financial Cryptography at MIT Media Lab, research fellow at University of Tokyo and Chief Security Scientist at MagicCube Inc. He is an editorial team member of LEDGER, the first Blockchain academic journal and a program committee member of W3C Blockchains and the Web. Together with Mr. Pindar Wong, he is establishing the BSafe.network to promote applied academic research in blockchain technologies. He is the editor of three ISO/IEC standards. Dr. Matsuo founded CELLOS, the international consortium for security evaluation of cryptographic protocol and serves as the head of its technical working group for securing cryptographic protocol like TLS. Previously he served as the head of Japanese national body of ISO/IEC JTC1 SC27/WG2 for cryptographic techniques, a member of advisory board cryptographic technology for Japanese government. He is the member of IACR, IFCA. Elizabeth Stark - Co-Founder & CEO, Lightning Elizabeth Stark is cofounder and CEO of Lightning, a company building technology for fast, scalable blockchain transactions. Stark has worked extensively in the realm of digital currency and open internet policy and is a fellow at Coin Center. Previously, she taught at Stanford and Yale about the future of the Internet and served as an entrepreneur-in-residence at StartX working with the Stanford startup community. Elizabeth has advised various blockchain startups including Blockstream, and is an advisor at Comma.ai, an autonomous driving company. She holds a J.D. from Harvard Law School.
Views: 380 DG Lab EN
Training Module: NXP & NTRU Cryptography for ARM MCUs
In this presentation, you will learn about the cryptographic software solution developed by NTRU for use with NXP's ARM7 LPC2000 microcontrollers. NTRU is a market leader providing comprehensive security products and services to businesses that wish to leverage the power of embedded security technologies. We will discuss the requirements for encryption and the different solutions we provide, as well as compare hardware encryption with software encryption. We will also examine the code sizes and throughputs of the different solutions.
Views: 494 LPCZone
Storj - Cheapest Decentralized Cloud Storage
Storj which is pronounced as "storage" aims to become a cloud storage platform that can’t be censored or monitored, or have downtime. It is the first decentralized, end-to-end encrypted cloud storage that uses blockchain technology and cryptography to secure your files. ************ Follow us at Steem.it: https://steemit.com/@wildpromotion/ Follow us at Twitter: https://twitter.com/WildPromotion We rely 100% on donations, so if you like our project please donate, any amount is appreciated! Bitcoin: 1M4Ker6WhzwFwfxGeDCKii5MvjJ3aKSpS3 Ethereum: 0x9c4ce40c433fb876cc239b44ba43265b1afdf837 Dash: XwtFQ93CGXehZz7KS6YxjpLu4jr4adL1EL Monero: bcaa342dd87761096074a69772b90d8a1cbd04c83fbcc40745b7b1dd56a74f5c Lisk: 5110663030318029130L Steem: f111279b5d1ab7b9 ************ Storj is a platform, cryptocurrency, and suite of decentralized applications that allows you to store data in a secure and decentralized manner. Your files are encrypted, shredded into little pieces called 'shards', and stored in a decentralized network of computers around the globe. No one but you has a complete copy of your file, not even in an encrypted form. Because of this, Storj can be faster, cheaper, and more secure than traditional cloud storage platforms. Faster because multiple machines are serving you your file simultaneously, cheaper because you are renting people's spare hard-drive space instead of paying for a purpose-built data center, and more secure because your file is both encrypted and shredded. There is no need to trust a corporation, vulnerable servers, or employees with your files. Storj completely removes trust from the equation. Storj uses blockchain features like a transaction ledger, public/private key encryption, and cryptographic hash functions for security. Storj is working hard to solve data security issues with the help of its own web app, Storj, which lets you store your files, and client app, Storj Share, which lets you rent your hard-drive space for money. To best protect your data, files are encrypted client-side on your computer before they are uploaded. Each file is split up into chunks which are first encrypted and then distributed for storage across the Storj network. The network is comprised of Storj Share nodes run by users around the world who rent out their unused hard drive space in return for Storjcoin X coin. The decentralized aspect of Storj means there are no central servers to be compromised, and with client-side encryption, you are in control of the keys to your files. Storj team recently announced migration to Ethereum blockchain. Migration will happen 1 to 4 weeks after the second crowdsale is finished. Well the second crowdsale is finished and the goal of raising 30 million $ for the future development is reached! If you check any other project on Ethereum blockchain, they all have much bigger market cap value than Storj has today, so we can expect a huge price increasement once STORJ is connected to Ethereum blockchain. Migration to Ethereum blockchain also means "smart contracts" as a new tool for Storj team to help them accomplish even bigger decentralization, primarily when it comes to payments. With migration to Ethereum a huge potential lies in a fact that some of the projects build on Ethereum blockchain will now easily connect and start using Storj as a storage solution for hosting their files. I hope this video will help you understand the huge potential of Storj and will trigger you to invest into Storj before the migration happens! Once the migration happens you will be late as the price will reach the skies!
Views: 1782 Wild Promotion
Teaser Mooc "Code-Based Cryptography"
This course will be taught by Irène Marquez-Corbella, Nicolas Sendrier from the SECRET Team (Inria) and Matthieu Finiasz (CryptoExpert). The objective of this course is to present the state of the art of cryptosystems. This MOOC covers the essentials that you should know about this hot topic in Cryptography and Coding Theory: the security-reduction proofs, the possible attacks, several proposals to reduce the key-size, etc. The course will be available on France Université Numérique FUN platform.
Views: 770 InriaChannel
World's First Demonstration of Space Quantum Communication Using a Microsatellite
- A big step toward building a truly-secure global communication network - National Institute of Information and Communications Technology (NICT) http://www.nict.go.jp/en/press/index.html [Highlights] ■ Successful demonstration of quantum communication between a satellite and a ground station ■ A big step toward the development of future satellite constellations using small satellites ■ It facilitates the adoption of this technology in a global truly-secure communication network The National Institute of Information and Communications Technology (NICT, President: Hideyuki Tokuda, Ph.D.) developed the world's smallest and lightest quantum-communication transmitter (SOTA) onboard the microsatellite SOCRATES. We succeeded in the demonstration of the first quantum-communication experiment from space, receiving information from the satellite in a single-photon regime in an optical ground station in Koganei city. SOTA weighs 6 kg and its size is 17.8 cm length, 11.4 cm width and 26.8 cm height. It transmits a laser signal to the ground at a rate of 10 million bits per second from an altitude of 600 km at a speed of 7 km/s. We succeeded in correctly detecting the communication signal from SOTA moving at this fast speed. This is a major step toward building a global long-haul and truly-secure satellite communication network. As a result of this research, NICT demonstrated that satellite quantum communication can be implemented with small low-cost satellites, which makes it possible to many research institutions and companies to use this key technology. It is an achievement that opens a new page in the development future global communication networks, being a big boost to the space industry. The results of this research were accepted to be published in the prestigious peer-reviewed journal "Nature Photonics" (August 2017 physical issue, electronic version accessible from July 10(UK time), 2017).
How will Blockchains reach the wider world? Scaling Blockchain technology at NCC 2016
Representatives from leading Blockchain companies, addressing the current technical challenges blockchain technologies face in progressing towards wider mass adoption. Speech: Elizabeth Stark Speech: Ryan Shea Speech: Kazue Sako Panel: Elizabeth, Ryan, Kazue These remarks were part of NCC 2016: “The Social Impact of Blockchain” on Friday November 4th, 9am-6pm at DG717, 717 Market Street, San Francisco, CA 94103. This full day conference will explore the Social Impact of Blockchain technologies. Bitcoin, Blockchain, Ethereum - these buzzwords are migrating from geek slang to the dictionary as they define an independent architecture for human trust and exchange. Amidst news of discord and hacking, who is responsible for building a reliable distributed ledger? How can the architecture behind crypto-currency benefit the greatest number of earthlings? Friday 4 November at DG717 in San Francisco, we will take a look at how blockchain could evolve to support or supplant our existing social institutions: For more information about NCC, visit https://www.dglab.com/en/ncc/ Elizabeth Stark - Co-Founder & CEO, Lightning Elizabeth Stark is cofounder and CEO of Lightning, a company building technology for fast, scalable blockchain transactions. Stark has worked extensively in the realm of digital currency and open internet policy and is a fellow at Coin Center. Previously, she taught at Stanford and Yale about the future of the Internet and served as an entrepreneur-in-residence at StartX working with the Stanford startup community. Elizabeth has advised various blockchain startups including Blockstream, and is an advisor at Comma.ai, an autonomous driving company. She holds a J.D. from Harvard Law School. Ryan Shea - Co-Founder & CEO, Blockstack Labs Ryan Shea is Co-founder and CEO of Blockstack Labs, which maintains the open source Blockstack software and makes it easy for developers to build decentralized, user-controlled applications secured by the blockchain. Blockstack Labs is funded by Union Square Ventures and Y Combinator. Ryan was inducted into the Forbes 30 Under 30 and graduated from Princeton University, where he studied Computer Science and Mechanical and Aerospace Engineering. He was also an engineer at ZocDoc, authored several popular open-source cryptography and blockchain libraries, and was the President of the Princeton Entrepreneurship Club, which was awarded the Alberto Santos-Dumont Prize for Innovation twice under his leadership. Kazue Sako - Senior Engineer, NEC Kazue Sako received her B.S. degree and PhD from Kyoto University. She is currently a Senior Engineer at NEC. Her research interest is in cryptographic protocols that enhance privacy and fairness, e.g. electronic voting protocols, group signature schemes and digital lottery systems. In order to promote the use of anonymous authentication, she edited ISO/IEC 29191 and ISO/IEC 20008-2. She served as Program co-Chair/ Chair for ASIACRYPT 2012, 2013 and RSA conference 2016 Cryptographer's Track. She is a strong advocate of Personal Data EcoSystem, which empowers individuals with their own data. She is a member of the Science Council of Japan.
Views: 228 DG Lab EN
What is DROWN ATTACK? What does DROWN ATTACK mean? DROWN ATTACK meaning & explanation
What is DROWN ATTACK? What does DROWN ATTACK mean? DROWN ATTACK meaning - DROWN ATTACK definition - DROWN ATTACK explanation. Source: Wikipedia.org article, adapted under https://creativecommons.org/licenses/by-sa/3.0/ license. SUBSCRIBE to our Google Earth flights channel - https://www.youtube.com/channel/UC6UuCPh7GrXznZi0Hz2YQnQ The DROWN attack is a cross-protocol security bug that attacks servers supporting modern TLS protocol suites by using their support for the obsolete, insecure, SSL v2 protocol to leverage an attack on connections using up-to-date protocols that would otherwise be secure. DROWN can affect all types of servers that offer services encrypted with TLS yet still support SSLv2, provided they share the same public key credentials between the two protocols. Additionally, if the same public key certificate is used on a different server that supports SSLv2, the TLS server is also vulnerable due to the SSLv2 server leaking key information that can be used against the TLS server. Full details of DROWN were announced in March 2016, along with a patch that disables SSLv2 in OpenSSL; the vulnerability was assigned the CVE ID CVE-2016-0800. The patch alone will not be sufficient to mitigate the attack if the certificate can be found on another SSLv2 host. The only viable countermeasure is to disable SSLv2 on all servers. The researchers estimated that 33% of all HTTPS sites were affected by this vulnerability as of March 1, 2016. DROWN is an acronym for "Decrypting RSA with Obsolete and Weakened eNcryption". It exploits a vulnerability in the combination of protocols used and the configuration of the server, rather than any specific implementation error. According to the discoverers, the exploit cannot be fixed by making changes to client software such as web browsers. The exploit includes a chosen-ciphertext attack with the use of a SSLv2 server as a Bleichenbacher oracle. The proof-of-concept attack demonstrated how both multi-GPU configurations and commercial cloud computing could perform part of the codebreaking calculations, at a cost of around $18,000 for the GPU setup and a per-attack cost of $400 for the cloud. A successful attack will provide the session key for a captured TLS handshake. The investigators, who described the attack above as the general DROWN attack also found a specific weakness in the OpenSSL implementation of SSLv2 that allowed what they called a special DROWN attack. This vastly reduced the effort required to break the encryption, making real-time man-in-the-middle attacks possible that required only modest computing resources. The original reporters of the bug were the security researchers Nimrod Aviram and Sebastian Schinzel. To protect against DROWN, server operators need to ensure that their private keys are not used anywhere with server software that allows SSLv2 connections. This includes web servers, SMTP servers, IMAP and POP servers, and any other software that supports SSL/TLS. The OpenSSL group has released a security advisory, and a set of patches intended to mitigate the vulnerability by removing support for obsolete protocols and ciphers. However, if the server's certificate is used on other servers that support SSLv2, it is still vulnerable, and so are the patched servers. Numerous sources have recommended that the vulnerability be patched as soon as possible by site operators.
Views: 645 The Audiopedia

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