Darktrace researchers reported a lab test in which a stolen Claude key was used to send nine jobs through Claude's memory store and pull out a 1 GB file. All of that traffic went to api.anthropic.com. Source: Darktrace Signal Labs, Nov. 12, 2026, via Help Net Security, Nov. 12, 2026. If you use Claude Code at work, your API key just became a lot more valuable to attackers. Darktrace researchers showed that with a stolen Claude key, they could turn Claude Code into a remote-co