US Department of Defense's decision to ban the use of USB drives and other removable data storage devices

Classified US Systems Breached: Attacks on US War Zone Computers Prompts Security Crackdown

The Los Angeles Times is reporting that the US Department of Defense's decision to ban the use of USB drives and other removable data storage devices was prompted by a significant attack on combat zone computers and the US Central Command that oversees Iraq and Afghanistan. The attack is believed to have originated in Russia. While no specific details about the attack were provided, it is known that at least one highly protected classified network was affected.

http://www.latimes.com/news/nationworld/nation/la-na-cyberattack28-2008nov28,0,6441140.story