virus definition and software updates are always included in your membership.   Your anti-virus software needs to be updated daily with the latest virus definitions. Outdated software is useless against new computer viruses.
An estimated 300 new viruses and variants are unleashed every month. If your software isn't updated, it won't find and destroy those threats.

That's why StopSign users always get daily updates included with their membership. You'll never pay extra for virus definition and software updates. Fights even new computer viruses, with daily virus definition updates.