https://appleinsider.com/articles/18/01/23/apple-issues-meltdown-and-spectre-fixes-for-older-mac-operating-systems
Apple issues Meltdown and Spectre fixes for older Mac operating systems | AppleInsider
Apple's latest macOS High Sierra was not the only Mac operating system to receive fixes for Meltdown and Spectre on Tuesday, as a separately released security...
meltdown and spectremac operating systems