Posts Tagged ‘Google’

Attack through new IE exploit

Tuesday, January 26th, 2010

Internet Explorer is again exploited by hackers. The attack, named “Aurora”, against Google and some other American companies was based on this new exploit of the Internet Explorer, announced McAfee. The exploit has already been reproduced by the Metasploit-Team, which has added the exploit to its framework.

Therefore the danger of this exploit has grown because also Script-Kiddies are able to use this exploit. The BSI recommended using another browser to not get victim of this exploit. Microsoft recommends to set the security options to “high” or to disable JavaScript on which the exploit is based.

A video explaining the attack “Aurora” can be found here.

A new effective attack against Google’s reCAPTCHA

Thursday, December 17th, 2009

A new effective attack against Google’s CAPTCHA mechanisms was invented by a security researcher lately. The whole attack procedure is presented in a paper that was released on Saturday. The attack is based on OCR (Optical Character Recognition) techinques that used to evade Googles’ reCAPTCHA (CAPTCHA stands for Completely Automated Public Turing test to tell Computers and Humans Apart, for more information click here). reCAPTCHA is a recent security measure that Google uses so as to stop malicious scripts of doing important tasks without has been done first a specific authentication process. This process requires the sense of sight, that a computer script can’t have, so that optical puzzles can be solved first, in order to continue with the task execution.

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