Several readers have alerted us to a fake Microsoft email circulating with a malicious attachment. If you are blocking executables at your email servers, there should not be a problem. The email looks like this, but might vary a bit:
Subject: Security Update for OS Microsoft Windows From: "Microsoft Official Update Center" <firstname.lastname@example.org>
Dear Microsoft Customer,
Please notice that Microsoft company has recently issued a Security Update for OS Microsoft Windows. The update applies to the following OS versions: Microsoft Windows 98, Microsoft Windows 2000, Microsoft Windows Millenium, Microsoft Windows XP, Microsoft Windows Vista.
Please notice, that present update applies to high-priority updates category. In order to help protect your computer against security threats and performance problems, we strongly recommend you to install this update. http://isc.sans.org/diary.html?storyid=5159&rss