Related links:

• Social Engineering, the USB Way
• USB flash drives are prime sources for data leaks
• The Forgotten Security Hole: USB
• USB Flash Drives: Useful Device or Security Threat?
• Stolen USB drive contains info on all Idaho National Guard members

Disk encryption software:

• TrueCrypt
• StorageCrypt
• Rohos Mini Drive

Hardware-based secure USB drives:

• Lenovo ThinkPad USB Portable Secure Drive
• JumpDrive Touchguard
• Kanguru Bio Drive
• SanDisk Cruzer Profile
• Kingston DataTraveler Elite