The primary appeal of FaceNiff was its ability to perform "sidejacking," or stealing session cookies from unencrypted traffic. Modern websites and applications now almost exclusively use HTTPS, which encrypts data between the user and the server, rendering passive sniffing tools like FaceNiff ineffective. Consequently, any "modded" version claiming to "crack" modern accounts is often a deceptive shell. Most current "FaceNiff" files found on third-party sites are likely antiquated versions or, more dangerously, completely different software disguised as a hacking tool to attract unsuspecting users. Security Risks of "Modded" Software