410 TOP. She’d seen it before—a ghost error that lived in the deep lore of the IT Slack channel. Legends said it happened when the security stack itself got confused. The "TOP" stood for "Time Out Protocol," but the old-timers called it the "Top of the Stack" error. It meant the client was talking to the server, and the server was talking back, but the handshake never finished. They were trapped in a digital staring contest.