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A critical security flaw in PHP, used by about 70% of websites worldwide, has triggered global alarm. The Korea Times reports that governments and companies shut down websites Wednesday after the AI-assisted discovery of two critical flaws. Yonhap says U.S. authorities advised sites to go offline if they cannot update immediately. In Korea, the government issued a 'caution' cyber alert, but Chosun Ilbo reports that 82% of domestic PHP servers run old versions that cannot receive the security patch; Kyunghyang adds that 73% of PHP servers use outdated versions. Experts warn hackers could seize servers without admin passwords, risking mass data theft. Ami Luttwak, co-founder of Wiz, called it 'the most serious AI-discovered vulnerability,' per Chosun Ilbo.