WannaCry ransomware with far larger scale.
Also this was NOT a malware attack. Neither was caused by Microsoft.
Crowdstrike has an endpoint protection software which is used by many companies including Government organizations. They pushed an update of their software which included a faulty kernel mode driver which failed to load in Windows causing a bugcheck (BSOD).
It was sheer incompetence by them as this could have easily been prevented if the patch was tested even on a single windows machine. They pushed the update without any testing whatsoever.
