The WannaCry ransomware was barely out of the headlines when another cyberattack took down computer systems around the world.

This time, a piece of malware dubbed “NotPetya” is to blame. And unlike WannaCry, it has no clear “kill switch” as it spreads across infected networks.
https://theconversation.com/three-ways-the-notpetya-cyberattack-is-more-complex-than-wannacry-80266