How to fully protect your Mac against Zombieland bug, and how badly the fix affects performance

Want to protect your Mac against the Zombieland (MDS) bug? According to Apple, becoming fully protected is not as simple as installing a patch.

Must read: iOS 12.3: How to keep your iPhone safe from hackers and snoopers

Step one, however, is to install the latest updates, which are MacOS 10.14.5 for systems running Mojave, and Security Update 2019-003 High Sierra and Security Update 2019-003 Sierra for Macs running older operating systems.

However, if you believe that you are at heightened risk of attack, Apple recommends that you disable hyper-threading on the CPU. And this comes with a huge performance cost, with Apple claiming “as much as a 40 percent reduction in performance with tests that include multithreaded workloads and public benchmarks.”

That’s a huge performance hit, and one that is likely to not only be noticeable, but have a major impact on how the Mac runs.

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