Security experts said CrowdStrike's routine update of its widely used cybersecurity software, which caused clients' computer systems to crash globally on Friday, apparently did not undergo adequate quality checks before it was deployed. The latest version of its Falcon Sensor software was meant make CrowdStrike clients' systems more secure against hacking by updating the threats it defends against. Patrick Wardle, a security researcher who specializes in studying threats against operating systems, said his analysis identified the code responsible for the outage. It's unclear how that faulty code got into the update and why it wasn't detected before being released to customers. Other security companies have had similar episodes in the past.

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Persons: Steve Cobb, Patrick Wardle, John Hammond Organizations: Dusseldorf Airport, Microsoft, Huntress Labs, Fortune, Infrastructure Security Agency Locations: Dusseldorf, Germany, U.S