Definitions by Opuqide
SEP
The Secure Enclave Processor (SEP), is a security chip that's part of the T2 Security Chip of the Macintosh family of computers using the M-series of chips from Apple, Inc. It was introduced with the first T2 Intel Mac, the iMac Pro (2017). It stores firmware passwords (if FileVault is enabled), and Apple ID information (if erased/restored, activation lock is triggered, requiring the user to enter the Apple ID credentials to remove the Apple ID linked to the Mac).