Crypto derivatives exchange Bybit just became the latest victim of North Korea’s elite hacking unit, the Lazarus Group. They didn’t brute-force their way in. They didn’t exploit some obscure vulnerability. Instead, they tricked a trusted developer, slipped in malicious code, and took off with a fortune.

How did this happen? Why was $1.5 billion sitting in a single wallet? What mistakes did Bybit and Safe make? And, more importantly, what needs to change to stop this from happening again?

This week, Mudit Gupta, chief information security officer at Polygon, joins Unchained to expose the security failures, the sophisticated tactics Lazarus used, and why crypto still hasn’t learned its lesson.