Red team vs purple team
A red team plays the attacker, usually covertly, to test whether defenders would detect and stop a real intrusion. The blue team is the defenders. A purple team exercise brings both together openly, running attacks step by step while defenders check what they saw, so detection gaps are found and fixed in the room. Red teaming measures readiness; purple teaming improves it quickly.
The three teams
- Red team. Simulates a real adversary against agreed objectives, using stealth and evasion. Only a small group knows it is happening.
- Blue team. Your defenders: security operations, incident response and the people who run monitoring.
- Purple team. A collaborative exercise where the red team runs techniques openly and the blue team checks, technique by technique, whether they detected each one.
Side by side
| Red team | Purple team | |
|---|---|---|
| Visibility | Covert | Open |
| Goal | Measure real detection and response | Improve detection quickly |
| Output | Whether defenders caught the attack | Tuned detections and closed gaps |
| Best for | Mature security teams | Teams building detection |
Read our article on adversarial simulation vs red team vs penetration testing.
Frequently asked questions
Which should we do first?
If your detection is immature, a purple team exercise improves it fastest. Once you are confident in your monitoring, a covert red team tells you whether it works when nobody is expecting an attack.
Does HYDN include purple-team learning in red team work?
Every HYDN red team engagement ends with a full debrief covering the techniques used, the gaps found and concrete remediation steps, which defenders can use to tune detection.
Published Updated