Signals intelligence

Signals intelligence is a type of intelligence-gathering (spying) that collects and analyzes information from communications and other electronic signals. It is used by governments, militaries, and law enforcement to get information they need from radio, telephone, and other types of transmissions. This helps them learn what their enemies are up to, where they are going, and what they are planning to do. This type of intelligence helps countries to keep themselves safe and make sure their enemies don't do anything bad.