: Even if a file ends in .mp4 , it can be disguised. Attackers sometimes use double extensions (e.g., movie.mp4.exe ) to trick users into running an executable file that installs a virus.
Downloading files from unverified third-party sites—especially those promising "free" copyrighted content—is a primary method for spreading malware. : Even if a file ends in
: Simply visiting these illegal sites can trigger malicious scripts that exploit browser vulnerabilities, show fake "infection" warnings to trick you into downloading fake antivirus software, or attempt phishing. or attempt phishing.