https://www.cnet.com/news/apple-meltdown-patch-sierra-el-capitan-older-operating-systems-macos-spectre/

You want to stay safe from hackers while still using an older version of Apple's MacOS, the underlying software that runs its laptops and desktops. Now, there's a patch for that.

On Tuesday, the company released updates to the Sierra and El Capitan operating systems that will protect users from Meltdown, the design flaw that could let hackers access sensitive information from a computer's processor.  The update means more Mac users will be safe from a vulnerability that affects hundreds of millions of chips made by Intel over the past 20 years. Patches to operating systems are one of the key ways to protect computers.