InformationWeek reports that the increasing spotlight on a dangerous Microsoft bug is not driven by hype, but by genuine concern. The bug in question was patched by Microsoft on Tuesday, and is one of 16 patches labeled as “critical” by the software giant. This worm affects all currently supported versions of Windows and rivals the damage potential of the destructive MSBlast attack, which surfaced in 2003. The bug can be exploited without users even lifting a finger. The Department of Homeland Security–which also oversees the United States Computer Emergency Readiness Team–took a rare step on Wednesday by issuing its own warning about the bug. The DHS release warned Windows users to “avoid delay in applying this security patch. This delay could impact government systems, private industry, and critical infrastructure, as well as individual and home users.” …