Did it really hit banks hard? Core banking systems don't run windows, they run on mainframes typically on IBM z/OS. I know it hit the financial firms hard an

Did it really hit banks hard? Core banking systems don't run windows, they run on mainframes typically on IBM z/OS. I know it hit the financial firms hard and knocked out their trading systems but I don't know of any major bank losing their core bank system due to crowdstrike. Australia got hit hard because they modernized their bank systems and now most are cloud based. I am not aware of any major bank running their core systems on the cloud or on windows.