Microsoft Windows Live Hotmail CAPTCHA seized by streamlined bot attacks

In Feburary this year, we reported that Spam bots cracked Windows Live CAPTCHA and then same thing happened to Gmail CAPTCHA. Now, the Websense Security Labs blog is reporting that the spammers have created a new automated bots that are capable of not only signing up and creating random Hotmail accounts, but also use these accounts […]

In Feburary this year, we reported that Spam bots cracked Windows Live CAPTCHA and then same thing happened to Gmail CAPTCHA. Now, the Websense Security Labs blog is reporting that the spammers have created a new automated bots that are capable of not only signing up and creating random Hotmail accounts, but also use these accounts for spamming purposes from a proper Live Hotmail service.

The blog has a detailed pictured analysis of exactly how the anti-spam bot is working, some of it pretty technical, but it does appear that the CAPTCHA process has been compromised.

Trying to defeat spammers and malicious bot networks is an ongoing battle that hasn’t been easy to win.  Microsoft Research has developed a system they are calling ASIRRA (Animal Species Image Recognition for Restricting Access), which requires the recognition of a picture of a dog or a cat, something fairly easy for a human but quite difficult for a computer program.  ASIRRA, in partnership with Petfinder.com, who supply the pictures is available now, but whether or not ASIRRA, or any other security system, will appear as a replacement for CAPTCHA in Windows Live Hotmail remains to be seen.

Source:→ Liveside

Microsoft, Hotmail, Windows Live Hotmail, CAPTCHA, Spam, Spammers, Anti-spam, Spam Bot, ASIRRA