Phone prices are constantly rising, and it's not always easy to justify the high costs of flagship offerings. However, you have options if you're looking for an upgrade or replacement for your old phone. There are some great used phones that support the latest updates and features of their contemporaries. Here are the best used phones between $100 and $500.

Surveillance is part of every law enforcement agency's purview, but are some taking it too far? How can you learn the extent of surveillance technology in your area? We have an excellent place to get started. This interactive site shows more than 10,000 examples of license plate readers, facial recognition, body cams, drones and more across the U.S.

Ever get that feeling someone knows more than they should? You might have a snoop on your hands. In my latest column, I'll share how to tell if someone is sneaking a peek at your messages.

Our habits add up, and you might have a few that put your cybersecurity at risk. I'm here to help. In this tech tip, I'll show you why the simple act of leaving your Bluetooth connected all the time is a mistake — and what to do about it.