Ask what Korea is talking about.

Critical security vulnerabilities in PHP, a programming language used by roughly 70% of websites worldwide, were discovered with the help of artificial intelligence, prompting governments and companies to shut down websites and issue emergency patches. The flaws, which could allow hackers to penetrate servers without login, went undetected for over a decade, and AI was essential in finding them, raising fears that hackers could also use AI for large-scale attacks. In Korea, the government raised the cyber crisis alert level for the private sector from "attention" to "caution" and issued a nationwide security alert to businesses and website operators, urging them to implement security measures. European governments, including in Switzerland, temporarily suspended government agency websites as a precaution. The PHP development team distributed an emergency patch on October 21, 2026.