How to Check for AI Platform Account Hacks: ChatGPT, Claude & Perplexity

Cybercriminals are increasingly targeting user accounts on AI platforms such as ChatGPT*, Claude, and Perplexity. These services store not only query histories but also sensitive data, making them prime targets for hackers. Key protective measures include using unique passwords, password managers, and multi-factor authentication (MFA), which blocks access even if passwords are compromised.

ChatGPT and Perplexity support MFA, while Claude employs an alternative authentication method: users receive a one-time login link via email instead of a password. All three platforms allow users to monitor active sessions, though the implementation varies. For example, ChatGPT lets you terminate a session on a specific device, whereas Perplexity only allows bulk termination across all devices.

If you notice an unfamiliar device in your active sessions list, immediately terminate its session and change your password (if applicable). With Claude, simply log out of all sessions, as the platform does not use passwords. Experts also recommend regularly reviewing security settings and updating authentication methods to minimize breach risks.