I bought an iMac 2018 years ago, but it seems that I am having trouble securing it now, which source I have not been able to pin down. I went to turn on FileVault, but saw an unusual procedure flow. I got a message: "Recovery Key A recovery key has been set by your company, school, or institution." I did NOT get this unusual procedure flow with the other macs (MacMini, macbookAir), to which I applied FileVault enable (OK). This iMac has never been under the governance of any company, school, or institution, because I bought it straight out of the Apple Store, right out of the box. But lately, I think that the security of the system has been breached by a hacker. Vitals: Model Name: iMac Model Identifier: iMac18,1 Processor Name: Dual-Core Intel Core i5 Processor Speed: 2.3 GHz Number of Processors: 1 Total Number of Cores: 2 L2 Cache (per Core): 256 KB L3 Cache: 4 MB Hyper-Threading Technology: Enabled Memory: 16 GB System Firmware Version: 529.140.2.0.0 OS Loader Version: 577.140.2~30 SMC Version (system): 2.39f40 Serial Number (system): D25XJ01NH7VF I went ahead & enabled FileVault with this warning statement, listed below, thinking that I could find a workaround. I have tried "sudo fdesetup removerecovery -institutional", and this works for staff, but not for administrators, either terminal in macOS 13.7.8 (22H730), or in Recovery Mode. Can someone enlighten me about what needs to be done to right my iMac's security issue, and help remove what seems to be a breach in my security with the MDM governance installation, which looks out of place because this iMac has always been at my house & never used with any instutition?