Nearly all free torrent websites are riddled with ads. These ads can be a source of infecting your device with viruses. Hackers can embed malicious codes with the ads that lure you into clicking on them. If you click them accidentally or by your will, they automatically install viruses on your device. The virus can silently work your device and harm the device and sensitive data stored within it. Thus, using reliable anti-virus software while using torrent sites is advisable. It can scan the device for potential threats and removes them before they cause any harm to your device.