They have different ways to encrypt messages which makes it a very good possibility…..

Sen. Dianne Feinstein (D-Calif.), the ranking Democrat on the Senate Intelligence Committee, told CBS’s “Face the Nation” on Sunday that encryption is “the Achilles’ heel in the Internet” when it comes to tracking terrorists.

“[FBI] Director [James] Comey and I think [CIA Director] John Brennan would agree that the Achilles’ heel in the Internet is encryption, because there are now — it’s a black Web and there’s no way of piercing it. And it’s even in commercial products. PlayStation, John, which our kids use, if the two ends communicate, that’s encrypted,” said Feinstein. “So, terrorists could use PlayStation to be able to communicate, and there’s nothing that can be done about it.”

On July 8, CNN reported that Comey told a Senate panel in July that the Islamic State of Iraq and Syria (ISIS) used encrypted programs to evade detection by law enforcement. After the terrorist attacks in Paris, the New York Post quoted Belgian federal home affairs minister Jan Jambon on Nov. 16 as saying, “PlayStation 4 is even more difficult to keep track of than WhatsApp,” the cross-platform mobile messaging system for smartphones and BlackBerry devices.