Owl-53 wrote:
Below is from another AI / LMM Chatbot response ( Not GROK )
When FileVault is disabled:
1. Your disk is no longer encrypted at rest
You know as well as I the reliability of AI. Point #1 is certainly wrong, on any Mac capable of running Tahoe (meaning it has a T2 chip or Apple Silicon) the data on the internal SSD(s) are encrypted with the keys stored in the Secure Enclave. So connecting the drive externally won’t work, nor will removing the SSD(s) and accessing them via another device. That was not true prior to the T2 chip, before which FileVault was the only (native) way to get full disk encryption.
However, logging into the device allows the data to be decrypted on the fly. Since the OP is choosing to not require a password at login, anyone with physical access to the device can easily access the data on it. With a password required for login but FileVault off, anyone with physical access to the device can reset the login password and gain access to the data on the Mac.
2. Your data is vulnerable if the device is lost or stolen
Documents, emails, photos, keychains, stored passwords, and cached messages are accessible without needing decryption.
I believe that keychains and passwords (stored in the Passwords app) are not vulnerable, those are stored in the Secure Enclave and require the user’s login password or biometrics to access. But everything else is an open book, which could include things like the user’s financial account information, etc. Depending on how the Mac’s is configured, gaining access to the computer could allow someone (a burglar, for example) to have access to email and text messages sent to the user, providing access to 2FA-protected bank accounts, etc.
While laptops are generally more vulnerable because they are often carried around with the user, desktop computers are commonly stolen during break-ins. IMO, the data on any computer (and backups of that computer) should be encrypted. On a Mac, turning on FileVault is the easiest way to accomplish that. It’s even easier now that the recovery key can be stored securely in iCloud.