Anthropic automatically signs out Claude users to protect them from hackers

Stolen Claude logins have serious resale value at scale. Adam Meyers, senior vice president of counter adversary operations at CrowdStrike, told Axios in August that a trade has grown up around hijacked AI accounts, with criminals trafficking credentials for Claude, ChatGPT and Gemini. Meanwhile, findings by Palo Alto Networks' Unit 42 have traced hijacked accounts to proxy services known as transfer stations. These pool stolen credentials and resell access to AI services at a much lower cost than retail. Anthropic doesn't publish exact figures for its Claude usage limits, but every prompt has a compute cost, which the company absorbs when a stolen session is doing the prompting.