![]() ![]() Malware defenses are structured in three layers:ġ. The Malware Removal Tool (MRT) is an engine in macOS that remediates infections based on updates automatically delivered from Apple (as part of automatic updates of system data files and security updates). Prevent launch or execution of malware: App Store or Gatekeeper and NotarizationĢ. ![]() Block malware from running on customer systems: Gatekeeper, Notarization, and XProtectģ. The first layer of defense is designed to inhibit the distribution of malware, and prevent it from launching even once-this is the goal of the App Store, and Gatekeeper combined with Notarization. The next layer of defense is to help ensure that if malware appears on any Mac, it’s quickly identified and blocked, both to halt spread and to remediate the Mac systems it’s already gained a foothold on. XProtect adds to this defense, along with Gatekeeper and Notarization.įinally, MRT acts to remediate malware that has managed to successfully execute. These protections combine to support best-practice protection from viruses and malware. There are additional protections, particularly on a Mac with Apple silicon, to limit the potential damage of malware that does manage to execute. See Protecting app access to user data for ways that macOS can help protect user data from malware, and Operating system integrity for ways macOS can limit the actions malware can take on the system. ![]()
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