USB Disk Security provides 100% protection against any threats via USB drive, however, the majority of other products are unable even to guarantee 90% protection. USB Disk Security is the best antivirus 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 offline computer. This light and easy to use solution is 100% compatible with all 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.