Ask what Korea is talking about.

A critical vulnerability in PHP, used by over 70% of the world's websites, was discovered through AI analysis, prompting governments and companies worldwide to shut down sites as they rushed to patch it. European government websites went dark on Wednesday, and U.S. authorities advised operators to go offline if they couldn't update immediately. The flaw, which could let hackers access servers without login, had gone unnoticed for over a decade, though PHP developers acknowledged seeing signs two years ago but failing to fix it. Korean media report that the discovery raises fears hackers will now use AI for large-scale cyberattacks, and note controversy over the patch being released early after attack signs were spotted.