Rapid Content Update file (detection signatures) are tested on the cloud side "Content Validator" which had a bug and didn't detect the issue with the faulty file. No where in the post mortem to CrowdStrike mention that these files are actually being tested on a real machine where the issue would have been detected. On top of that, they blame they software bug in the Content Validator.
guy literally tested on 600k machines in prod. imagine going home and telling it to your wife haha. kids will say you a legend.