How to troubleshoot Contact Key Verification for extra-secure iMessage chats

With iOS 17.2, iPadOS 17.2, macOS Sonoma 14.2, and watchOS 9.2, Apple released an option for further ensuring the private communication of iMessages. Called Contact Key Verification (CKV), this extra step performs additional checks on your device to see whether anyone has managed the difficult-but-not-impossible feat of inserting themselves into your secure end-to-end iMessage conversation. This problem has long been seen as a threat because of how Apple maintains central storage of one component of the pair of encryption

Read more