![]() Allow MDM (for businesses) to manage kernel extensions and software updates.Allow third-party kernel extensions to run (ACE needs this permission).Reduced Security: Any compatible macOS version can be installed, as long as it was previously signed by Apple.(On iOS, this is used to prevent downgrades to previous versions.) Your Mac ensures that only actively signed versions of macOS can be installed. Full Security: This is the default (and safest) boot policy, with no security downgrades permitted.On Macs with Apple silicon, Apple uses three levels for boot security (per installed OS): After reviewing the resource provided by MartinR, ACE isn't actually a kernel extension, but it needs similar privileges - thus resulting in similar restrictions. ![]() Reduced Security and the TOC takes you to much more detail.Īpple silicon Macs prohibit third-party kernel extensions by default, to provide better security. The page I linked speaks directly about Full Security vs. And in the case of Rogue Amoeba, they have been a solid developer with a great track record with Mac apps.įor detailed info about Mac security, see Apple Platform Security. with User Management of kernel extensions from identified developers." The Reduced Security is "similar to Medium Security behavior on an Intel-based Mac with a T2 chip" to quote from Apple's own documentation. I would not be bothered by the "Reduced Security. In recent releases (Catalina/BigSur/Monterey) there have been significant changes in the security architecture that are evidenced in things like the Security Policy options you got when you tried to install ACE. That said, OS X/macOS has always been a relatively secure operating system and Apple has further tightened macOS security with each new release. App authors are having to work through this issue as macOS evolves. Even Soundflower (which can enable almost any recording app to record internal audio) is a kext. ![]() At present, and as far as I know, all apps that are capable of recording Mac internal audio depend on a kernel extension or component that is subject to security options.
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