Researchers develop new robot-proof CAPTCHA

Wednesday, April 23rd, 2008

CAPTCHAs are becoming both ubiquitous and useless. When you visit many web sites, you have to decipher some tough-to-read text and enter it in a box before you can leave a comment or send an email. But hackers are getting better and better at developing automated systems to crack CAPTCHAs, ...

Deciphering the PHP-Nuke Captcha

Monday, April 21st, 2008

The Captcha used in the current version 8.1 of PHP Nuke can be deciphered with 100% accuracy. more information can be found here: http://www.rooksecurity.com/blog/?p=6 Exploit Code: http://www.rooksecurity.com/exploits/php_nuke_captcha.zip What is so interesting about this captcha is that it is incredibly wide spread. Variants of this captcha are being used by big names like Paypal. ...

Bot breaks Hotmail’s CAPTCHA in 6 seconds

Monday, April 14th, 2008

A new bot can crack defenses erected by Microsoft to keep spammers from creating large numbers of accounts on its Live Hotmail service within seconds, a security researcher said Friday. Dan Hubbard, vice president of security research at Websense, said the bot broke Live Hotmail's CAPTCHA (Completely Automated Public Turing Test ...