Richard Falkenrath, a principal at Chertoff Group and Bloomberg Television contributing editor, talks about the London police arrest of a 19-year-old man on suspicion of being involved in a hacking attack on Sony Corp. and the U.S. Central Intelligence Agency.   Police are looking into whether the man is associated with the LulzSec or Anonymous groups. Falkenrath speaks on Bloomberg Television’s "InBusiness With Margaret Brennan."