FaceNiff operates by monitoring network traffic to identify session tokens—pieces of data that keep you logged in without re-entering your password.

: Unlike earlier tools, it was notable for working on WPA, WPA2-PSK, and WEP encrypted networks, not just open ones.

: Modern websites now use HTTPS (SSL) by default, which encrypts traffic and prevents FaceNiff from reading session data. Comparison with Similar Tools

: Experts warn that apps designed to hack others often contain hidden code that steals the attacker’s own information.

While many sites claim to offer a "FaceNiff APK Mod" (often promising "Pro" features unlocked), users should exercise extreme caution: