So has the unknown attacker just made a cool fifty grand? Not necessarily. Information security professionals across the globe are watching the three wallets like hawks, and are certain to try and track it wherever it goes. (It hasn’t been touched so far.)

And then there’s law enforcement, who — because of the sheer scale of the attack — are going to be seriously motivated to get to the bottom of it.

“There is definitely a sweet spot for leveraging online crimes. You want to use scale to make money, not enough scale to get LE [law enforcement] to wake up,” Facebook’s chief security officer Alex Stamos tweeted on Saturday.

“‘Hospitals can’t operate’ is the kind of fact pattern that changes the calculus on assumptions like ‘I’ll never get extradited’.”