You're never responsible for unauthorized purchases on your Discover card.
We monitor every purchase, every day and alert you of unusual activity by e-mail, phone or text. If you misplace your card, you can freeze it any time with our website or mobile app – you can still shop online or by phone with your account number. If you need a new card, we can even overnight it for free at your request. Plus, our U.S.-based Fraud Specialists are here to help any time.