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macOS, hyperthreading and Microarchitectural Data Sampling vulnerabilities

May 16, 2019 Leave a comment

In 2018, vulnerabilities were publicly disclosed in computer processor architecture which affected the vast majority of desktops, laptops, mobile devices and servers. These vulnerabilities are referred to as Meltdown and Spectre. There is a lot of information available online about these vulnerabilities, but the cartoon below provides a decent summary of the issue:

Meltdown and spectre

On May 14th, 2019, additional Spectre vulnerabilities were disclosed using the name Microarchitectural Data Sampling (MDS). These vulnerabilities apply to desktop and laptop computers which use Intel processors. These processors are used by all modern Macs, but not by iOS or Apple Watch devices. These devices do not use Intel processors and instead use Apple’s own processors. For an excellent round-up of information on this developing issue, please see @zoocoup‘s post available via the link below:

https://mrmacintosh.com/mds-vulnerabilities-summary-for-macadmins-by-jason-broccardo

How to remediate this problem? For the details, please see below the jump.

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