CrowdStrike is blaming a bug in an update that allowed its cybersecurity systems to push bad data out to millions of customer computers, setting off last week's global tech outage that grounded flights, took TV broadcasts off air and disrupted banks, hospitals and retailers.
A technician works on an information display near United Airlines gates at Chicago O'Hare International Airport in Chicago, Friday, July 19, 2024, after a faulty CrowdStrike update caused a major internet outage for computers running Microsoft Windows.
The company on Wednesday posted details online from its “preliminary post incident review ” of the outage, which caused chaos for the many businesses that pay for the cybersecurity firm's software services. A bug in the content validation system allowed “problematic content data” to be deployed to CrowdStrike's customers. That triggered an “unexpected exception” that caused a Windows operating system crash, the company said.
CrowdStrike has said a “significant number” of the approximately 8.5 million computers that crashed on Friday, causing global disruptions, are back in operation as customers and regulators await a more detailed explanation of what went wrong.
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