Apple Enhances iMessage Security with Contact Key Verification Technology

Apple has released technical details about its new iMessage security feature called Contact Key Verification. The feature protects against potential threats by providing automatic alerts if unrecognized devices are added to an iMessage account. Users can enhance security by using CKV in person, on FaceTime, or through another secure method. Apple's iMessage has implemented various security features over the years, including end-to-end encryption, stronger cryptographic primitives, and advanced sandboxing mechanisms. Contact Key Verification aims to secure the key discovery protocol and provide a seamless user experience by automatically verifying key material and metadata, synchronizing the source of truth across devices, and notifying users only when unexpected security conditions occur.