Last year, the most common password, by one measure, was 123456. And the fourth-most common password was … password. (Are either of those yours??) Suffice it to say we can do better, but there are trade-offs. Learn how you can keep your own computer and phone (more) secure. Just how private are your emails and texts? What’s end-to-end encryption? And just what does incognito mode do? All this and more.