americans. that cyber attack occurred in 2014. one of the most damaging government heists in u.s. history. later that year, the state department had to take down its entire unclassified email system due to foreign hacking. in 2015, a cyber hack into the office of the chairman of the joint chiefs affected more than 4,000 unclassified email accounts of the pentagon. those accounts were kept off-line for ten days. in other words, foreign hacking is not new. >> aware that the u.s. -- russian was hacking into the u.s. election. >> u.s. officials admit that the u.s. government does not currently have a well articulated cyber defense strategy. >> we have tried to up our game defensively. we have, you know, selectively responded.