How to password-protect your Mac–and keep other people from using it
Since you use your Mac on a regular basis, it has most likely become a treasure box full of your personal information that you might wish to keep as private as possible. This may especially ring true for your portable MacBook that you bring around different people and use in various locations, but is also applicable to your desktops Mac that others may use when you’re not around.
Whether you just bought a brand new MacBook or are tethered to a long-lasting Mac Pro, security should be a priority. Here are a few tips for keeping your Mac secure and making sure your personal data stays away from prying eyes.
To really keep your Mac secure, you absolutely have to use a complex and unique account password—and you should set parameters that require users to enter this password whenever possible.