Provides 100% protection against any threats via USB drive. USB disk security is one of the best software to permanently protect offline computer without the need for signature updates but other antivirus software should update signature database regularly and they cannot effectively protect online computer. This light and easy to use solution is compatible with other security software and doesn't slow down your computer at all. You pay USB Disk Security once and get it all, however, other antivirus products should be paid for updates every year. Suitable for Windows XP, Vista and 7.