Claude Duet never sees your passwords, even when it signs in

When a site asks for a password, you type it into a form in the Claude app, which encrypts it with a single-use key that only a separate cloud browser machine can open. Anthropic says the Claude Duet model never sees the password and can’t save or repeat it.

A new classifier, run apart from the main model, checks every message Duet drafts before it goes out. Sign-in credentials, full card numbers and government ID numbers never get shared, even if you ask. Health or finance details need your consent. The safeguards “will occasionally miss something or flag a harmless message,” Anthropic says.

Trading securities and moving money between accounts stay off-limits even with your approval. Stock trades stay a job for you.