American towns under cyberattack from an NSA-built software

Over the last few weeks,the city of Baltimore essentially went offline after a cyberattack was followed by a ransom demand which the city refused to pay. According to the New York Times, ‘EternalBlue’, the software that wreaked havoc in Baltimore and other cities, was actually created by the National Security Agency. New York Times reporter Scott Shane joins Hari Sreenivasan for more.