Security on a Mac: Setting Passwords & Locking your Screen

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I use a Mac and a PC at my job, and one thing we fall victim to, if we do not lock our computer when we walk away, is we end up coming back to a desktop wallpaper of David Hasselhoff.

Knight Rider

You could wind up with this on your screen. Or worse.

So we are always told to lock our PCs. Fortunately, this is easy to do. You simply press the Windows key + L and it locks your machine (The Windows key is the key between ctrl and alt, that has the Windows flag on it).

But I also needed to find a way to lock my Mac — which isn’t as easy as the nice, two-key combo Microsoft has laid out for us.

You can lock a Mac through key combinations. In newer Macs, you can click control + shift + the power button, and you will see your screen go black, and if you tap any key on the keyboard, it will wake up the screen, and you can see that your Mac is locked.

However, in my case, I can’t even reach my power button, so this just won’t work. What I do (and I consider this the best and easiest way to lock a Mac) is to lock by using Keychain Access.

Keychain Access is the equivalent of Windows Credential Manager, in that it saves passwords that you frequently use on the Mac. In order to use Keychain Access for locking your Mac, you will, of course, need to set a password on your Mac (otherwise what’s the point in locking, if users can hit ‘return’ and go right into your Mac).

To set a password on a Mac, click on the Apple logo in the upper left-hand corner of the Mac, and go to System Preferences. From there you will see a location called Users & Groups.

Preferences

Inside Users & Groups, you will see your account listed. You might have to click on the lock, down in the lower left-hand corner, to make changes (if you do, it will require a password, and if you have none set, you can simply click OK). Once you have the ability to edit your account, click on it. You will see the location, next to your photo, that states Reset Password. This is where you will enter your password.

You can then click the lock to prevent further changes and move on to Keychain Access.

When you launch Keychain Access, you won’t need to do anything in the window that pops up, only in the Preferences for Keychain Access. To access Preferences, click on the words “Keychain Access” in the upper left-hand corner, and go to Preferences…

In Preferences, under the General tab, put a check mark where it states: Show keychain status in menu bar

Keychain

This adds an unlocked lock in the menu bar in the upper right hand corner of your Mac. If you now click on that icon, you have an option to ‘Lock Screen’.

Lock

It’s as simple as that!

 

The Difference Between IMAP and POP

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The question of “what is the difference IMAP and POP?” when it comes to email.  Well here is a quick and basic rundown of how it works.  IMAP is “internet message access protocol” and POP is “post office protocol”.

Think of IMAP as a window.  You can look out the window and see trees and grass but those trees and grass are not in your house.  This is the same with the mail.  You can look through the “window” and have the experience of having the email on your computer but it is not actually there.  With IMAP, the email remains on the server no matter where you access it from.

POP being “post office protocol” is exactly that.  When you go to the post office or your mailbox to pick up your mail, you take the mail with you and there is not a copy left behind for you to access later.  This is the same with your email.  Once you pick up the email, it is stored on your computer and your computer alone.

Below is a visual breakdown of how it works.  If you think of these protocols as described above, it is pretty easy and pretty basic in essence.