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Critical security vulnerabilities in PHP, a language used by roughly 70% of websites worldwide, have driven governments and companies to take sites offline, with the flaws identified with AI assistance, Korea Times and Business Korea report. Yonhap reports Korea's government raised its cyber crisis alert to 'caution' (주의), estimating about 110,000 vulnerable domestic servers, while Chosun Ilbo says 82% of Korean PHP servers cannot be patched because they run outdated versions. Japanese government and corporate sites have also seen outages, given high PHP dependence, Yonhap adds. Korean media and security experts urge immediate updates, noting web application firewalls alone cannot fully block attacks, and warn of personal data leaks and service disruptions.