A buffer overflow vulnerability was disclosed last Thursday and rated "highly critical" by Secunia, but it is still unsure if attackers can successfully exploit the bug.

Czech experts have discovered a new botnet redirecting users to data-stealing Web sites.

The botnet made famous by the propagation of the Zeus banking Trojan has started distributing a brand-new threat to businesses' financial accounts.

Mozilla pulled two extensions from its download site after finding out that they contained a Trojan. 4,600 users could be infected.

Secunia Research has discovered a vulnerability in Windows XP, which can be exploited by malicious people to compromise a user's system.

An IT blogger conducted tests on several voice encryption products and succeeded at eavesdropping calls on most of them.

The Windows kernel has a vulnerability present in all versions of NT, which was first introduced in 1993.

The Home Network Administration Protocol allows attackers to bypass the CAPTCHA login features of the routers.

Researchers at McAfee have discovered that the Chinese hackers exploited a zero-day vulnerability found in Internet Explorer to conduct their attacks on Google and others.

A researcher published last Friday a Proof of Concept code for a vulnerability that he says could be used for a dangerous exploit. But Apple's OS might not be affected at all by the code.

Samy Kamkar, the author of a massive worm spread on MySpace in 2005, has posted a Proof of Concept using (once again) a XSS vulnerability, this time in wireless routers, that can reveal the target router's physical location.

XSS vulnerabilities that could lead to account hijacking have been discovered in Google Calendar and Twitter.

Ubuntu has issued an update for Firefox and Xulrunner. This fixes multiple vulnerabilities, which can be exploited by malicious people to conduct spoofing attacks, bypass certain security restrictions, manipulate certain data, disclose sensitive information, or compromise a user's system.

Fl0riX has reported a vulnerability in the JoomPortfolio component for Joomla, which can be exploited by malicious people to conduct SQL injection attacks.

The Mozilla Foundation has announced a new Security Advisory for its Firefox 3.5 browser. A similar announcement has also been published for version 3.0.

A vulnerability has been reported in Adobe Reader and Acrobat, which can be exploited by malicious people to compromise a user's system.

A large scale SQL injection attack has injected a malicious iframe on tens of thousands of susceptible websites.

Multiple vulnerabilities have been reported in Microsoft Windows, which can be exploited by malicious people to compromise a user's system.

pyrokinesis has discovered a vulnerability in Adobe Illustrator, which can be exploited by malicious people to compromise a user's system.

The dreaded Blue Screen of Death (BSoD) has a little brother: the blacK Screen of Death (KSoD). UK-based security firm Prevx initially claimed it is caused by a recent patch from Microsoft, but reports of similar issues months before that patch's release and denial by Microsoft itself leave the issue unexplained.

After facing 300 cyber attacks from foreign countries last year, the government evaluates it could retaliate.

This is an idea that came out of a Microsoft Trustworthy Computing VP's speech, last week at RSA Conference 2010.

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