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Upgrading MacOS Click to jump to a section: Security and MacOSCheck MacOS VersionHow to UpgradeHelp Security and MacOS Apple supports the three most recent versions of MacOS: Sonoma, Sequoia, and Tahoe. If your computer is running Ventura (13) or older you are no longer receiving security updates, and your machine is at an increased risk of compromised data.…
https://www.wichita.edu/services/its/userservices/AppleUpgrade.php