One day after a stern warning from the Department of Homeland Security to patch your Windows operating system ASAP, security vendor eEye released a free scanner to identify the TCP ports 135 and 445 that are vulnerable to the Server Service vulnerability addressed in Microsoft's security bulletin MS06-040. On Tuesday, Microsoft announced fixes for 23 vulnerabilities in its Windows and Office software, and criminal elements wasted no time in releasing public exploits for many of the more critical patches, including MS06-040. This flaw in particular is regarded as worrisome since it bears similarities to the flaw that was exploited three years ago with the MSBlast worm.