Islamic State (ISIS/ISIL) jihadists have improved their ability to prevent Western intelligence agencies from eavesdropping on their communications by using a mix use of encrypted apps, face-to-face meetings, written messages, and misleading the authorities with false information, leaving authorities with few leads to pursue.
“Tips posted by Islamic State-related propaganda outlets describe high- and low-tech methods to avoid detection: Switch mobile phones frequently; sign up for online accounts using temporary phone numbers; hopscotch frequently between chat apps, making any intercepted conversations difficult to follow,” notes The Wall Street Journal (WSJ). – READ MORE