CrowdStrike Cyber-Case: Update to Global Outage
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Authors
Dumitru, Nick
Issue Date
2026
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Abstract
On July 19, 2024, a massive IT outage took place due to the failure of a software update coming from CrowdStrike, one of the top global cybersecurity firms. The outage affected more than 8.5 million Windows devices and led to severe problems delivering services in domains ranging from airlines to hospitals.1 CrowdStrike fixed the issue in less than a week, but it revealed serious issues with the automated updates used by IT infrastructure.