The Vundo Trojan horse can get onto your computer via many routes. For example: Bit torrent websites. Sure, many people love bit torrent sites for many reasons. But the fact remains that these places are often havens for infected files that carry viruses, adware, and other malicious programs. Given its spread all over the internet, Vundo may well have been bundled with your last torrent stream! Internet Explorer. Vundo can worm its way through an old exploit in Microsoft Internet Explorer. This is why it's important to constantly keep up with the latest patches and updates, or else switch to a safer browser. There are plenty of other ways Vundo can get a foothold on your system. No matter how it got there, taking care of it with good anti-spyware is vital!