CNBC: ‘The NSA could put the Russians back to the 19th century,’ in cyber warfare, says Christopher Rouland

Christopher Rouland, Phosphorus Cybersecurity CEO and former CTO of IBM, joins ‘Power Lunch’ to  discuss the biggest existing cybersecurity threat, how the U.S. can best protect against cybersecurity threats and what a retaliation from the U.S. in cyber warfare would look like.