A high-level overview of how websites and services should store passwords security, so next time there's a breach you'll know what to look for.

Once you hit that Send button, you must assume there is no way to stop your email from being sent . . . even if it's to the wrong person.

A black screen is most commonly caused by a screen saver, but there are other possibilities.

Most music, picture, and movie files are already compressed. Compressing them again won't make much difference, and could even make them larger.

Using Dropbox to share files across machines is pretty common. You can also use Dropbox on only one machine as backup technology.

When replacing a hard drive or an entire machine, it can be very convenient to have the old hard drive available in an external drive enclosure.

It's not uncommon to get unexpected email sent to an email address similar to your own. I'll review why that is and what to do about it.

Sharing Wi-Fi with your neighbor might seem like a friendly thing to do, but be aware you are potentially putting your own computers at risk.

BitLocker might be turned on without your knowledge. That's fine, but make sure you have the recovery keys stored somewhere should you ever need them.

"Mailbox unavailable" is a common email bounce message that tells us very little. I'll review some of the more common causes of "mailbox unavailable".