CrowdStrike blames test software for taking down 8.5 million Windows machines

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CrowdStrike blames test software for taking down 8.5 million Windows machines
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CrowdStrike’s faulty update affected millions of Windows machines. Now, it’s making improvements to testing and rollouts to avoid a repeat incident.

CrowdStrike has published a post incident review of the buggy update it published that took down 8.5 million Windows machines last week. The detailed post blames a bug in test software for not properly validating the content update that was pushed out to millions of machines on Friday. CrowdStrike is promising to more thoroughly test its content updates, improve its error handling, and implement a staggered deployment to avoid a repeat of this disaster.

CrowdStrike released two Rapid Response Content updates last week, or what it also calls Template Instances. “Due to a bug in the Content Validator, one of the two Template Instances passed validation despite containing problematic content data,” says CrowdStrike. While CrowdStrike preforms both automated and manual testing on Sensor Content and Template Types, it doesn’t appear to do as much thorough testing on the Rapid Response Content that was delivered on Friday.

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