Armed with nothing more than a mobile device and an internet connection, bad guys can potentially track, predict, and avoid US airstrikes and reconnaissance missions.
Though the Islamic State claimed responsibility for the March 18 attack, Tunisian authorities blamed al Qaeda’s offshoot in North Africa and said nine suspects were killed in a raid Sunday.
Authorities say four members of the terrorist cell that allegedly carried out the March 18 attack are still at large.
Two gunmen responsible for Wednesday's attack on the Bardo museum in Tunis have been identified and nine suspects have been detained. Meanwhile, the number of victims has risen to 23.
Up to five gunmen stormed the Bardo art museum in central Tunis today, killing 19 people and injuring another 24. Tunisia's Prime Minister has described the attack as "heinous."