The Twitter account for U.S. Central Command was apparently hacked on Monday, with pro-ISIS messages plastering the account's profile.  The first message was posted at 12:29 p.m. ET, with the words "AMERICAN SOLDIERS, WE ARE COMING, WATCH YOUR BACK. ISIS." and the hashtag "#CyberCaliphate."

On Sept. 2, Chowrangi, an English-language online journal of culture and news in Pakistan, published a story about three explosions in Lahore that killed more than 30 and wounded more than 200, including women and children. Like a lot of online stories, this one sparked vociferous comments.