Welcome back! Part 1 of “How to secure your Mac” focused on general steps you can take to mitigate risk with a short trip to the Security & Privacy module in the macOS System Preferences.
Part 2 looks at more intricate areas of Apple’s desktop operating system, where users can perform more-technical tweaks to further strengthen the security of their Mac and protect their privacy.
Set a firmware password
One of the first things you can do as you set up anew is to lock down your Mac with a firmware password to keep bad actors from booting up your Mac from a USB drive, which would allow them to bypass your login screen and access your files. To rule out this scenario:
