SMADAV!

Panda USB Vaccine is a free utility from Panda Research which helps prevent malware infections due to the autorun feature of Windows Operating Systems. Once executed the user can choose two types of vaccinations: Computer Vaccination or USB Drive Vaccination. USB Vaccine allows users to vaccinate their PCs in order to disable autorun completely so that no program from any USB/CD/DVD drive (regardless of whether they have been previously vaccinated or not) can auto-execute. This is a really helpful feature as there is no user friendly and easy way of completely disabling autorun on a Windows PC. Panda USB Vaccine can be used on individual USB drives to disable its autorun.inf file in order to prevent malware infections from spreading automatically. »

USB Disk Security provides 100% protection against any malicious programs trying to attack via USB storage. Supports USB drive, flash storage, secure digital card, thumb drive, pen drive, removable storage, ipod, and more.

USB Defender was developed to be extremely easy in use. You can see just two buttons on it: "Protect" and "Unprotect". First button you are using to vaccinate your drive, second - to remove protection. After selecting any drive, program automatically detects, if there is any protection active and only one button will be available for you. Also you have a checkbox there, which is to choose, what level of protection use. If you put a tick on it - you 'll need administrative rights on your PC to protect (and then, if needed, unprotect) USB drive. BUT using Pro way of protection is MUCH more secure and protect you with 99.999999999(9)%. »

The USB immunizer is BitDefender's response to this growing issue. This small utility is divided in two sections.