「Captcha」に関連した動画の一覧 |
![]() | Luis von Ahn: Massive-scale online collaboration www.ted.com After re-purposing CAPTCHA so each human-typed response helps digitize books, Luis von Ahn wondered how else to use small contributions by many on the Internet for greater good. At TEDxCMU, he shares how his ambitious new project, Duolingo, will help millions learn a new language while translating the Web quickly and accurately -- all for free.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. Featured speakers have included Al Gore on climate change, Philippe Starck on design, Jill Bolte Taylor on observing her own stroke, Nicholas Negroponte on One Laptop per Child, Jane Goodall on chimpanzees, Bill Gates on malaria and mosquitoes, Pattie Maes on the "Sixth Sense" wearable tech, and "Lost" producer JJ Abrams on the allure of mystery. TED stands for Technology, Entertainment, Design, and TEDTalks cover these topics as well as science, business, development and the arts. Closed captions and translated subtitles in a variety of languages are now available on TED.com, at http 2011年12月07日再生回数 107385 |
![]() | PHP Captcha Tutorial Download phpDesigner7 today at mpsoftware.dk for a free 21 day trial! Video tutorial explaining how to create a CAPTCHA system using PHP. 2009年05月27日再生回数 30297 |
![]() | What is CAPTCHA Used For? chris.pirillo.com Aside from being annoying, does CAPTCHA really serve a useful purpose? When you fill out a CAPTCHA, you're essentially telling the website that you're a human being capable of reading (or in some cases hearing) the distorted word, phrase, or random characters. This is one method site administrators use to keep spammers from flooding the site with unwanted content. Unfortunately, spammers have found ways around CAPTCHA. One popular method is hiring a team of people in another country to solve the CAPTCHA barriers for the spamming system. They are presented with a new CAPTCHA every time their system comes across one. Once solved, they move on to the next while the spam gets sent to the site automatically. With this in mind, there are many useful alternatives to CAPTCHA out there. If your site is built on WordPress, you may find a solution in plug-ins such as Akismet, Challenge, and others. Feel free to give your take on this question here: lockergnome.net What do you think? Are CAPTCHAs still among the better anti-spam systems available? Is there something better? 2011年06月11日再生回数 7228 |
![]() | Human Computation Luis von Ahn, Carnegie Mellon University; from Computing Research that Changed the World: Reflections and Perspectives, March 25, 2009,;www.cra.org 2009年05月29日再生回数 85602 |
![]() | Captcha Adam runs into a slight problem with 'Captcha'. 2008年02月29日再生回数 15829 |
![]() | Captcha'd ITEM 7: Motor Oil CLUE: Geoff had to grow this mustache for another live action series. Not only that, but he had to wear a plumber's outfit for it too. roosterteeth.com - Brandon raises Geoff's suspicions when he can't access a website. 2010年10月16日再生回数 380280 |
![]() | Cracking CAPTCHA with Padding Oracle attack This video shows how to crack all CAPTCHA in a target website using only JavaScript hosted on a different machine. We do that by exploiting Padding Oracle and web browsers cross-domain information leakage vulnerabilities. One can easily turns this exploit into a distributed attack. Please see our paper at www.netifera.com for more technical details. Thank you and happy hacking! --Juliano Rizzo and Thai Duong 2010年02月19日再生回数 14160 |
![]() | Captcha: how to easily add a captcha to a form. In this video we show how to add a captcha to a form using dreamweaver 8 and a captcha image extension for dreamweaver. 2008年05月26日再生回数 28246 |
![]() | What is a CAPTCHA? Even if you don't know what CAPTCHA stands for, you've more than likely run into them while browsing the Internet. It is actually a test to differentiate between humans and computers, learn more @ butterscotch.com: bit.ly 2010年07月20日再生回数 705 |
![]() | Loaded: Cracking Captcha Google TV uncovers an update, something is sucking the life from the iPhone 4S, and evil robots cannot be stopped by Captcha...or at least some of them. 2011年11月01日再生回数 12509 |









