SITUATION EXPLAINED: It’s being called "Black October," the worst week in cybersecurity in years, with AI on both sides of the fight. • PHP2Shell, a hole in the software behind about 70% of websites, has been patched, but attackers have already tried to exploit it millions of times • eMudhra, an Indian company that vouches for websites, made its private keys so weak that one was literally the number 4, so anyone could fake a secure HTTPS site. Chrome, Firefox, and Apple have since blocked…