CrowdStrike's massive outage caused Windows systems around the world to crash, but 97% of systems were restored within a week
The large-scale CrowdStrike outage that occurred on July 19, 2024 (Japan time) affected
George Kurtz on LinkedIn: Falcon Content Update Remediation and Guidance Hub | CrowdStrike | 65 comments
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CrowdStrike is a security company that operates worldwide, with clients including not only private companies but also government agencies. For this reason, the large-scale outage that occurred on July 19, 2024 also affected the operations of the US Department of Justice and emergency call centers.
Delta Airlines cancels more than 4,000 flights due to CrowdStrike-related outage, severely affecting hospitals and government agencies - GIGAZINE
It has been announced that the failure was caused by a sensor configuration update for Windows systems released by CrowdStrike. The detailed cause of the failure is summarized in the following article.
What was wrong with CrowdStrike's code that caused many Windows to have blue screens?
CrowdStrike has been working with Microsoft since the incident occurred to provide recovery tools and guidance. Then, on July 26, 2024, CEO George Kurtz posted on LinkedIn that 'As of July 25, 2024, more than 97% of Windows sensors have been brought back online,' making it clear that recovery is progressing smoothly. Kurtz also said, 'We understand that our work is not yet complete and we continue to work to restore all affected systems. We will not rest until we are fully restored.'
CrowdStrike's stock price was $377.37 (approximately 58,000 yen) on July 15, 2024, before the outage, but continued to fall after the outage and was $254.15 (approximately 39,000 yen) at the time of writing.
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