Malware that burrows deep into your system to hide itself. Notoriously hard to detect and remove.

Malware that encrypts your files and demands payment for the decryption key. Nasty stuff.

Malware that spies on your computer activity, collecting personal data to send to hackers.

A self-replicating virus that spreads over networks without needing to piggyback on another program.

Playing media in real-time as it’s sent over the internet. Services like Spotify and Netflix use streaming.

The number of pixels in an image or video frame. Higher resolutions mean more detail.

How many times per second a screen completely redraws itself. Higher rates mean smoother motion.

Copying audio or video data from one format to another, like CD tracks to MP3 files.

Accessing a computer over a network. Can be handy but also opens security holes if not set up right.

Features that restrict content and computer use. Handy for protecting kids online.