The IPC Template Type passed testing on March 5, so a Template Instance was released to use it.

Three more IPC Template Instances were deployed between April 8 and April 24. All ran without crashing 8.5 million Windows machines – although, as we reported earlier this week, Linux machines had problems with CrowdStrike in April.

On July 19, CrowdStrike introduced two more IPC Template Instances. One included "problematic content data" – but made it into production anyway, because of what CrowdStrike described as "a bug in the Content Validator."

The post doesn't detail Content Validator's role – we'll assume it's supposed to do what the name suggests.

'Content Validator' did not validate the content

https://www.theregister.com/2024/07/24/crowdstrike_preliminary_incident_report/