![]() ![]() This is also the only security level that permits you to customize or disable SIP. All available security downgrades are permitted at this security level. macOS isn't personalized, and you can even boot a custom kernel (such as m1n1 to load Asahi Linux). Permissive Security: This is the least secure option, and is hidden from Startup Security Utility. All other security mechanisms remain enabled. Additionally, you can also permit signed third-party kernel extensions, or if you're in a corporate environment, you can allow mobile device management (MDM) to manage updates and kernel extensions. This allows for booting old versions of macOS that Apple no longer actively signs. Reduced Security: This option doesn't personalize macOS to your Mac, and doesn't require an Internet connection to Apple servers. This process requires an Internet connection, and happens whenever you install or update macOS, or when you request Full Security. Your Mac "personalizes" macOS and ties it directly to your Mac using the serial number (ECID) of the CPU. ![]() There are three security levels available:įull Security: This is the default and most secure option, with all security downgrades disabled. On Macs with Apple silicon, System Integrity Protection is tied directly to the Secure Boot policy. Thanks for your suggestions and explanation I enabled SIP again but I would like to know why it happened. ![]() Sure my wife has not the knowledge to play with Terminal and even myself I know about SIP only after a recent help in ASC which helped me to remove a file from trash. It has only "normal" Apps installed, Apple Apps MSOffice, nothing strange. The MBP was alway in very good and healthy conditions. No idea why or even if the SIP was always disabled from the beginning of this MBP or if Monterey disabled it. Used terminal to check with csrutil status and it was disabled toghether with other disabled functions. I was surprised to see in the first lines of the report that SIP was disabled. Mail crashed due to unknown reason after a new mail account setup and we got a crash report which has been sent to this ASC for help. Monterey disables System Integration Protection ? Monterey disables System Integration Protection ? My wife upgraded recently her MBP to Monterey. ![]()
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