Cybersecurity definition
What is Agent?
By Cyber Tool Stack Editorial TeamUpdated
Definition
A small piece of software installed on a device that collects activity data and can take local action, such as blocking a process or isolating the machine from the network.
Where Agent fits in the security landscape
These beginner lessons use this term while explaining the surrounding security control.
Related cybersecurity terms
EDREndpoint Detection and ResponseSoftware that continuously records what happens on endpoints (processes, files, network connections) and detects, investigates, and responds to malicious behavior.TelemetryThe stream of activity data — process starts, file changes, network connections — that an agent continuously records and sends to a central system for analysis.EndpointAny laptop, server, or mobile device that runs software and connects to a network — the place where most attacks ultimately execute.