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.
Recently updated Adobe Reader to version 9.3.0 and subsequently received two requests from Microsoft Security Essentials to submit the update files for analysis (which I did). Unusual, huh??