Ask what Korea is talking about.

Critical vulnerabilities in PHP, a programming language used by roughly 70% of websites worldwide, have caused government agencies and companies globally to shut down websites, with the flaws identified with the assistance of artificial intelligence (AI). The Korean government has issued a nationwide security alert to businesses and website operators, raising its cyber crisis warning to '주의' (caution), and Yonhap reports an estimated 11,000 vulnerable servers in Korea. The National Security Office held an emergency meeting involving public, private, and military sectors to respond swiftly. Korean media report that attackers can execute malicious code on web servers without login, raising concerns over personal data leaks and service disruptions, with security experts noting that web application firewalls (WAF) alone cannot fully block attacks. Ami Luttwak, co-founder of Wiz, called it "the most serious security vulnerability discovered by AI."