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A critical security vulnerability in PHP, used by over 70% of websites worldwide, was discovered by AI and prompted emergency shutdowns of government and corporate sites across Europe and the US on October 21. US authorities advised operators to go offline if they couldn't patch immediately, while some distributors faced criticism over a patch leak during a tense six-hour period. The PHP foundation admitted it had seen signs of the flaw two years ago but failed to fix it. Korean media are covering the global response, including European government site closures and the role of AI in uncovering the decade-old defect, with some outlets noting hackers could also use AI to exploit it.