Why the US was unprepared for the 2020 cyber breach
They call it Einstein. It's the multibillion-dollar digital defense system the US has used to catch outside hackers and attackers since 2003. But it was no match for what's looking like one of the biggest cyber breaches in US history. Ian Bremmer breaks it down.
Watch the GZERO World episode: Cyber attack: an act of espionage or war?