Speaking of two-factor authentication, you should really enable it on every service that offers it. And good news! Instagram has rolled out two-factor authentication to all users. You’ll need to add a phone number to your account if you haven’t already done so, and then, whenever you log in, you’ll receive a text to that number with a code, which you’ll have to enter. To set up the option in the Instagram app, tap the icon for your profile in the toolbar, then the gear icon in the top right. You’ll see an entry for Two-Factor Authentication right below Posts You’ve Liked; select that and follow the onscreen directions.
—Linked by Dan Moren