Those from Cupertino launched a major security update for users who for some reason do not have the most current version of the operating system installed on their Mac and remain on macOS Sierra or El Capitanv. In this case, the update fixes the Meldtown problem and the computers are now expected to run smoothly.
Apple released all the final versions of its systems yesterday afternoon and in the case of users who remain in versions prior to the current system, they have just received a Major fix for Meltdown and Specter.
By now we all know the problem that affects all teams regardless of operating system, Intel, AMD and ARM processors are affected so we don't need to dig deeper into it either. In any case, it is important that Apple and the rest of the companies take the necessary measures to be able to stop these attacks.
The good thing about Apple is that it usually takes action on this type of issue as soon as possible and that is why they were among the first to seek a balanced solution for all their computers, without affecting or trying to affect users as little as possible. In this case it is the previous two OSs that receive this fix for Meltdown and Specter, so it is important. Let's hope that little by little everything stabilizes a little more and that these types of problems do not affect the next generations of processors.