Purple Team
Purple Team is a security testing approach that combines Red Team (offense) and Blue Team (defense) activities in a collaborative manner. Instead of competition, both teams work together to maximize threat detection and improve the organization's protection.
What is Purple Team?
Purple Team Definition
Purple Team is a security testing methodology where the Red Team (attackers) and Blue Team (defenders) collaborate instead of operating in isolation. The goal isn’t for one side to “win,” but to jointly improve the organization’s detection and defense capabilities.
The name comes from mixing colors: red + blue = purple.
Purple Team vs Traditional Approach
Traditional Red vs Blue:
- Red Team attacks in secret
- Blue Team tries to detect
- Report at the end
- Often adversarial
Purple Team:
- Joint attack planning
- Real-time feedback
- Iterative improvement
- Collaboration, not competition
How Does a Purple Team Exercise Work?
- Planning: Jointly defining objectives and techniques
- Execution: Red Team executes ATT&CK technique
- Observation: Blue Team monitors in real-time
- Analysis: Was it detected? How to improve?
- Tuning: Adjusting detection rules
- Repetition: Iteration with next technique
Purple Team Benefits
- Faster feedback loop: Immediate learning
- Better detection: Live rule tuning
- Knowledge transfer: Red Team teaches Blue Team
- Measurable results: MITRE ATT&CK coverage
- Cost effectiveness: More value from testing
Purple Team and MITRE ATT&CK
The ATT&CK framework is a natural foundation for Purple Team:
- Systematic technique coverage
- Common language
- Measurable progress
Purple Team Roles
Red Team provides:
- Attack techniques
- Adversary emulation
- Exploitation expertise
- Tool knowledge
Blue Team provides:
- Detection capabilities
- Log analysis
- Tool tuning
- Operational context
Purple Team lead:
- Exercise coordination
- Progress documentation
- Finding prioritization
Purple Team is an evolution of traditional penetration testing, maximizing value for the organization through collaboration.