Claude Security Now Runs on Mythos 5. The Delivery Model Is the Actual Story.
On August 21, Anthropic moved Claude Security scans onto Claude Mythos 5, the cyber-capable model it has deliberately kept out of general availability since April. The capability is real. The more consequential detail is how it reaches you: as findings and patches, never as the model itself. Here is what the tool does, where the model boundary actually falls inside your own workflow, and the limits worth stating plainly before it goes in front of a security team.