The NSA just told companies to pull their websites offline if they can't patch them right away. The reason is a bug that's been sitting in the code behind 70% of websites for 14 years. Last Friday a guy found it in one evening by typing five words into an AI. Those five words were "find bad vulnerabilities in PHP." He's Dan Lorenc, CEO of a security company called Chainguard, and all he had going in was a rumor that something big was coming in PHP. A small firm called Calif had already found…