Chatbots like ChatGPT, Gemini and Claude run on large language models. Here's what they are, how they work and why they sometimes get things confidently wrong.

How AI tools work, what they can and can’t do, and how to use them safely.

Router boxes are covered in Wi-Fi numbers and speed claims. Here's what Wi-Fi 6, 6E and 7 really change, and when an upgrade makes a difference at home.

Every USB-C cable looks the same, but they can differ hugely in charging power and data speed. Here's how to tell them apart and buy the right one.

More processing is moving from distant data centers onto your phone, car and home devices. Here's what "the edge" means and how it affects speed, privacy ...

AI assistants are useful, but what you type can be stored and reviewed. Eight simple habits keep your private data, and your employer's, out of trouble.

Passkeys let you sign in with your fingerprint, face or device PIN instead of a password, and they can't be phished. Here's how they work and how to set ...

Phishing messages are getting more convincing. These warning signs, and one simple rule, will stop most scams before they cost you money or your accounts.