Exploding Digital Community News Today

Priority for federal investigators, finding then scrubbing all of the electronic and social media communication that the san bernardino suspects may have utilized. >> we are going through a very large volume of electronic evidence. this is electronic evidence that these killers tried to destroy and tried to conceal from us. >> reporter: suspect tashfeen malik used a private facebook message to pledge allegiance to isis, but its likely no one noticed because it was private. isis has become fluent...