Microsoft patches Internet Explorer vulnerability that was used to break into Google’s network. Microsoft acknowledged today that it had known of the bug since August 2009, when an Israeli security company reported the flaw. Microsoft last patched IE in December 2009, and on average, updated its browser every two months. Of the eight flaws fixed today, seven were rated “critical” by Microsoft, the highest threat ranking in its four-step scoring system. Microsoft also patched seven other bugs in IE in today’s update.”]