The previous guide for macOS Mojave (10.14) reflected a fundamentally different securitymodel, one that often required working around the operating system and compensating for missing guarantees. With macOS 26 Tahoe, Apple has completed its shift to hardware-anchored, architecture-level security, where fundamentally protections are now baseline. As the last major release supporting Intel Macs, Tahoe marks a natural breakpoint for a fresh start. The new macOS 26 Tahoe Hardening Guide is a complete rewrite. It focuses on hardening a single macOS client without relying on MDM or SSO integrations.
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