Part of having a computer, smartphone, or any electronic device is applying security updates. Even refrigerators get security updates. Applying those updates is the best thing you can do to keep your devices safe and secure. For most Mac users, it’s pretty easy. System and app updates are handled in the Mac App Store. It turns out, though, that Macs don’t always apply critical updates correctly. You might be missing out on some firmware patches that could leave your Mac vulnerable.