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Comment by varenc | Hacker News Reader

They also released an update for Big Sur and Catalina: https://support.apple.com/en-us/HT201222

No luck with High Sierra though. Its last update was in Nov 2020.

Apple is notable for providing ZERO official guidance on how long various versions receive security updates. Officially they just say you must be on the latest version. At the moment they're still releasing updates back to Catalina on macOS and iOS 12 for all the devices still stuck on that version. But they make no claims on how long that will continue.

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They seem to support the current version and the previous two before that. So Mojave is not getting support, but Catalina is at this time. But be careful what you wish for -- the last Catalina security update broke software using openGL accelerated graphics for Apple computers with integrated Intel HD4000 graphics. This includes Google Earth, Google Street view, AutoDesk, RStudio and many web apps. So a lot of people have had to revert to older unsupported MacOS versions just to get any work done.

Yup, this is a well known secret among anybody who supports Macs - Apple typically supports the latest release and the two immediately preceding it. iOS is a different story though, as they sometimes go back a few versions to fix CVEs.

I'm also locked on High Sierra...

Only solution is to use Big Sur installation using Hackintosh patches and to run it on mine computers.

>They also released an update for Big Sur and Catalina: https://support.apple.com/en-us/HT201222

How one knows that BigSur for instance isn't already compromised by one of those wonderful capabilities for code execution as they provide update only now ?

It’s uncommon that previous versions of software and OS aren’t impacted by new vulnerabilities.

Not sure what you're getting at? They released the Monterey, Big Sur, and Catalina security updates all at the exact same time. They're all vulnerable, and they all had patches released at once.

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