CWmike writes "Microsoft will release its emergency patch for Internet Explorer on Thursday, the company said, as it also admitted that attacks can be hidden inside rigged Office documents. 'We are planning to release the update as close to 10:00 a.m. PST as possible,' said Jerry Bryant, a program manager with the IE group. Microsoft has updated the security advisory it originally published last week when it acknowledged a zero-day IE vulnerability had been used by hackers to break into the corporate networks of Google and other major Western companies. Google has alleged that the attacks were launched by Chinese attackers. Subsequently, security experts have offered evidence that links the attacks to China."