You can update your Mac by opening the System Preferences app, where you'll find the "Software Update" option.

You can see if you're running the latest macOS version by clicking the Apple logo in the top-left corner, then selecting ...

Apple has patched a serious security flaw on iPhone, iPad, and Mac. Patch fixes a flaw that could allow an attacker to install spyware. The flaw has been exploited in the wild against targeted ...