Let's look back at the week that was in Microsoft news. Here were the top stories:

Microsoft warns of IE bug used in Chinese attacks on Google: While investigating the recent attacks disclosed by Google earlier this week, Microsoft has concluded that Internet Explorer was used as an attack vector. As a result, the software giant has issued a security advisory for the vulnerability.

Crufty old apps force IE, Firefox into uneasy coexistence: IE still has over 80 percent share of the enterprise desktop, but coexists with Firefox and Chrome on a significant number of those machines. As legacy IE6-centric apps continue to live on at many companies, the outlook for Firefox and other browsers in the enterprise is uncertain.