What is a Purple Team?

Purple teaming is a collaborative security approach in which offensive specialists and defenders work together. The red side performs agreed attack techniques, while the blue side observes telemetry, tests detections and responds. Both sides immediately exchange what worked and what remained invisible.

A purple team does not have to be a permanent third team. It is often a working format that connects an existing Red Team, SOC and infrastructure teams around specific objectives.

How does a purple-team exercise work?

• - Select relevant techniques and define safe test conditions.
• - Execute one technique at a time and verify what each control records.
• - Tune logs, alerts and response steps while the context is still available.
• - Repeat the technique to prove that the improvement works.

What is the result?

The useful output is not a count of attacks. It is a verified map of which techniques are prevented, detected and handled, together with concrete gaps and owners. This makes purple teaming particularly suitable for improving an existing security operation.

Red Team, Blue Team and Purple Team compared

When is Purple Teaming particularly useful?

The format is useful when basic logging and response processes exist but their effectiveness is uncertain. Selection should follow relevant attack paths and techniques from the MITRE ATT&CK framework, not the desire to run as many tools as possible. Target systems, permitted actions, stop conditions and contacts are agreed before the exercise.

Useful metrics ask whether the required telemetry existed, how quickly a reliable alert appeared and whether the playbook led to the correct response. A detection remains valuable only when it is repeated as a regression test and updated after changes.