Cybersecurity

Blue Team

Definition

A Blue Team is a group of security professionals who are responsible for defending an organization's information systems against attack. This includes the ongoing work of configuring security controls, monitoring for threats, and responding to incidents.

Why It Matters

The Blue Team represents the internal security function of an organization. They are the defenders on the front lines every day.

Contextual Example

The Security Operations Center (SOC) is the core of the Blue Team. They use tools like SIEMs and EDR to monitor the network for signs of an attack and follow incident response procedures when a threat is identified.

Common Misunderstandings

  • The Blue Team defends against both real attackers and simulated attackers (the Red Team).
  • A key goal of a red team exercise is to train and improve the skills of the blue team.

Related Terms

Last Updated: December 17, 2025