Security and privacy risks Visiting unofficial movie sites can pose security and privacy risks. Malicious ads, deceptive download buttons, bundled malware, and trackers are common on piracy-focused portals. PCs can mitigate some risks with up-to-date antivirus software, sandboxing, ad-blockers, and browser security practices, but those safeguards are not foolproof. Users who value safety should prioritize reputable sources and exercise caution when downloading files from unknown sites.