Within days of the attack, respected cybersecurity firms Symantec and Kaspersky Labs hinted at a North Korea link. Google researcher Neel Mehta identified coding similarities between WannaCry and malware from 2015 that was tied to the North. And the media have since spun out stories on Pyongyang’s league of hackers, its past involvement in cyberattacks and its perennial search for new revenue streams, legal or shady.
But identifying hackers behind sophisticated attacks is a notoriously difficult task. Proving they are acting under the explicit orders of a nation state is even trickier.
When experts say North Korea is behind an attack, what they often mean is that Pyongyang is suspected of working with or through a group known as Lazarus. The exact nature of Lazarus is cloudy, but it is thought by some to be a mixture of North Korean hackers operating in cahoots with Chinese “cyber-mercenaries” willing to at times do Pyongyang’s bidding.
Lazarus is a serious player in the cybercrime world.
