https://www.reuters.com/article/us-twitter-cyber-fbi-exclusive/exclusive-u-s-fbi-is-leading-an-inquiry-into-the-twitter-hack-sources-say-idUSKCN24H2PH >The U.S. Federal Bureau of Investigation is leading a federal inquiry into the Twitter hacking, two sources familiar with the situation said, after hackers seized control of accounts belonging to Joe Biden, Kim Kardashian and others in what appeared to be a bitcoin scam.