Security Defense is fraudulent software that is eager to infect as much workstations as possible worldwide. It is the follower or the clone of Security Protection scam. When installed, this evil tool tunes up the system in such way to start up automatically after every Windows reboot. While running, this fake antimalware scanner will generate preprogrammed security alerts and warnings that are created to persuade you that your PC has some security leaks. BUT! Believe us – the best thing you may ever do, just disregard them. They have nothing to do with real security state of your computer system. They just attempt to distort the truth.