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261	PDF Document Add to Reading List Source URL: research.microsoft.com Language: English - Date: 2003-09-24 15:16:57 Artificial intelligence Science CAPTCHA Video game bot Turing test Internet Relay Chat Algorithm Strong AI Usability Human–computer interaction Alan Turing Computing
262	PDF Document Add to Reading List Source URL: cups.cs.cmu.edu Language: English - Date: 2008-07-15 11:09:50 Crimes Password Computer network security Phishing Authentication Identity theft Internet privacy CAPTCHA Self-service password reset Security Computer security Cryptography
263	PDF Document Add to Reading List Source URL: paper.ijcsns.org Language: English - Date: 2011-07-04 22:29:25 Computer security Hacker Vulnerability CAPTCHA Reverse Turing test Turing test Computing Hacking Alan Turing
264	PDF Document Add to Reading List Source URL: mollom.com Language: English - Date: 2013-08-23 11:57:30 CAPTCHA Spam Email spam Anti-spam techniques XRumer Spamming Internet Computing
265	PDF Document Add to Reading List Source URL: www.net-security.org Language: English - Date: 2010-04-07 05:33:22 Computer network security Multi-agent systems Spamming Botnets Conficker Zeus RSA Conference Trojan horse CAPTCHA Malware System software Computer worms
266	PDF Document Add to Reading List Source URL: bitland.net Language: English - Date: 2015-03-28 17:43:06 CAPTCHA Human-based computation Optical character recognition OCRopus Puzzle Software Computing Artificial intelligence