Microsoft is scrambling to patch an Internet Explorer flaw that was used to hack into Google's corporate networks last month.

The attack was used to hack into networks at 34 companies, including Adobe, security experts say. Typically such hacks involve several such attacks, but the IE bug is the only one definitively linked to the hacking incident, which security experts say originated in China.

In a security advisory released Thursday, Microsoft said IE 6 users on Windows XP are most at risk from the flaw, but that other users could be affected by modified versions of the attack.

Microsoft said it is developing a fix, but it did not say when it expects to patch the issue. The company is slated to release its next set of security updates on Feb. 9.

http://www.computerworld.com/s/article/9144958/