Telegram blocked 78 ISIS-related propaganda channels in reaction to abuse reports sent by users. Hacktivist group Anonymous announced in a video in French after the Paris attacks that it has “declared war” on ISIS. Former U.S. Defense Secretary Robert Gates urged President Obama and Congress to ask the National Security Agency for insights on “add capabilities in tracking potential terror plots” Security analyst: “There is no way of being absolutely sure that all ISIS-based channels were in fact blocked””]