According to Apple, if turned on, the three-digit security code for your Apple Card will continuously change when it is viewed in the Wallet App or when it has been auto-filled for a transaction in Safari ... After turning on Advanced Fraud Protection, your Three-digit Apple Card security code will change periodically after it's been viewed in the Wallet App or after it's been auto-filled from Safari ... You can turn on Advanced Fraud Protection in the Wallet App on iPhone and iPad under your Apple Card settings Now.