According to Kaspersky, Russia was by far the worst hit: https://securelist.com/blog/incidents/78351/wannacry-ransomware-used-in-widespread-attacks-all-over-the

According to Kaspersky, Russia was by far the worst hit: https://securelist.com/blog/incidents/78351/wannacry-ransomware-used-in-widespread-attacks-all-over-the-world/ https://securelist.com/blog/incidents/78351/wannacry-ransomw... (Ukraine, India, and Taiwan were also unusually heavily affected.)