How One Bad CrowdStrike Update Crashed the World’s Computers

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How One Bad CrowdStrike Update Crashed the World’s Computers
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A defective CrowdStrike kernel driver sent computers around the globe into a reboot death spiral, taking down air travel, hospitals, banks, and more with it. Here’s how that’s possible.

Only a handful of times in history has a single piece of code managed to instantly wreck computer systems worldwide: The Slammer worm of 2003. Russia’s Ukraine-targeted NotPetya cyberattack. North Korea’s self-spreading ransomware WannaCry. But the ongoing digital catastrophe that rocked the internet and IT infrastructure worldwide over the last 12 hours appears to have been triggered not by malicious code released by hackers, but by the software designed to stop them.

” Raiu adds that even so, CrowdStrike is far from the only security firm to trigger Windows crashes with a driver update. Updates to Kaspersky and even Windows’ own built-in antivirus software Windows Defender have caused similar “Blue Screen of Death” crashes in years past, he notes. “Every security solution on the planet has had their CrowdStrike moments,” Raiu says. “This is nothing new but the scale of the event.

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