System Fighter is a rogue antivirus application. It is the latest variation in the relentless wini family of rogues. (The last of these was systemveteran (systemveteran removal guide.) Rogue antivirus applications usually install through a popup website that appears to be scanning your computer for viruses (and finding them). This is usually simply a really good animation and you get to see the same thing no matter which web browser or operating system you visit from. They will also popup warnings about files infected on your system and claim the only way to fix the problem they find is to purchase their software. Of course, you can’t fix something that isn’t wrong and so purchasing really doesn’t accomplish much for you. Read on for how to remove system fighter: