Additional Guard is a rogue antivirus application and like many of these it can either be installed with or without the users permission. Even without a person actually wanting it, but simply visiting the wrong web page users may find this program on their system. Once on their system this software will popup many ads and warnings. It will claim that your computer is infected with many viruses and has many problems that only it can fix and of course, it CAN’T fix them unless you pay. It’s really a scam that will cost you money and not solve any problems. Read on for how to remove additional guard.