While Obama was speaking about this (note the time stamps):

ISIS did this:

In a startling and terrifying security breach, ISIS fiends hacked into the Twitter account of the Defense Department’s CENTCOM on Monday — even going so far as to post generals’ home addresses and e-mails while warning, “WE ARE COMING, WATCH YOUR BACK.”

“We won’t stop! We know everything about you, your wives and children,’’ said one posting under a list of personal information involving everyone from commanding officers to deputies to liaison specialists.
Modal Trigger

The first enemy tweet, posted around 12:30 p.m., said, “AMERICAN SOLDIERS, WE ARE COMING, WATCH YOUR BACK. ISIS.”