TheDefend is a rogue antivirus program that is one of the latest incarnations of the wini family of rogues. It will introduce itself onto your system through aggressive advertising claiming to be a video codec update or flash player update that may be required to see a highly sought after video. Once the user tries to download the codec they have loaded a trojan which installs the software and then they are buried with popups and complaints of security problems on their computer and multiple viral infected files. The catch here is that they claim they cannot repair the problems unless you purchase their software. Read on for how to remove TheDefend.