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AI has uncovered critical security vulnerabilities in PHP, a programming language used by about 70% of websites worldwide, prompting governments and companies to temporarily shut down sites as a precaution. The flaws, which human researchers failed to prove for over a decade, were found using AI, with PHP developers releasing an emergency patch on October 21. European government sites, including Geneva University, went offline, and the U.S. NSA advised going offline if patches aren't applied. No actual hacking damage has been confirmed yet, but concerns are rising that hackers could use AI for large-scale attacks. In Korea, KISA has recommended security updates, and lawmaker Lee Hae-min said the government is "responding seriously."