thursday. fox business alert for you. federal officials sounding the alarm on isis in america and just how far reaching the terror group's capabilities truly are. cheryl casoni here with the latest. >> the threat of cybersecurity attacks by isis and other enemies of the state -- the united states prompting fbi director james comey to issue a warning. the terror group is using encrypted communications to recruit vulnerable americans urging them to carry out attacks here at home. dianne feinstein spoke out during a congressional hearing yesterday. >> this is not your grandfather's al qaeda. they're pushing this through twitter. so it is no longer the case that someone who is troubled needs toaganda and motivation, it buzzes in their pocket. there is a devil on their shoulder all take long saying kill kill kill kill. >> the companies do not proactively monitor their sites to identify such content.