~200,000 organizations worldwide (UK NHS, Telefónica, Renault, Deutsche Bahn, Honda et al.)

WannaCry ransomware worm

A North Korean ransomware worm that exploited the EternalBlue SMB vulnerability to spread to ~200,000 systems across 150 countries in 24 hours. Paralysed the U.K.'s NHS and crippled manufacturing globally.

Victim

~200,000 organizations worldwide (UK NHS, Telefónica, Renault, Deutsche Bahn, Honda et al.)

Loss

$6.00B