Anthropic patches Claude Code privacy leak that exposed user email addresses

According to GitHub issue #107757 filed November 5, Claude Code version 2.1.318 on macOS was writing signed-in users' email addresses into HTTP User-Agent headers during web requests without permission, leading one user to report receiving scam emails daily. Anthropic contributor Lydia Hallie announced a fix planned for early the following week that removes account email from the context provided to the model, and noted that a built-in privacy plugin blocks the leak in version 2.1.317 and later.