/ Resources / Comparison
Pen Test vs Red Team vs Purple Team
Three offensive security engagement models that get conflated constantly, then under-deliver because the wrong one was procured. Each has a specific job, and you usually need different ones at different stages of program maturity.
/ Key takeaway
Pen tests find vulnerabilities at a point in time. Red teams test whether you can detect a real adversary. Purple teams build the muscle to detect future ones. Most mature security programs run all three — but in sequence, not at once.
At a glance
| Capability | Pen Test | Red Team | Purple Team |
|---|---|---|---|
Primary goal | Find vulnerabilities | Demonstrate breach path | Improve detection coverage |
Scope | Broad — defined assets | Narrow — chosen objective | Joint exercise on agreed TTPs |
Stealth | No (announced testing) | Yes (covert) | No (collaborative) |
SOC awareness | Aware | Not aware | Aware and participating |
Typical duration | 1-3 weeks | 4-8 weeks | Ongoing or 1-2 weeks per cycle |
Deliverable | Vulnerability report w/ CVE refs | Attack-path narrative + IOCs | Detection improvements + tests |
MITRE ATT&CK mapping | |||
Compliance value | PCI, SOC 2, HIPAA, ISO 27001 | Demonstrates response capability | Demonstrates continuous improvement |
Cost (typical mid-market) | $15K-$60K | $80K-$300K | $40K-$120K |
Skills exercised | Vulnerability finding | Adversary tradecraft | Detection engineering |
Right for first engagement Walk before you run |
How to decide
Match the engagement to your security program maturity stage:
When
First-time engagement, building a baseline, or compliance-driven (PCI, SOC 2, HIPAA require periodic testing).
Choose
Pen test. Establishes your vulnerability baseline and satisfies most regulatory requirements.
When
You have a mature SOC, you've fixed pen test findings for 2+ cycles, and you want to know if you'd actually catch a real attacker.
Choose
Red team. Tests detection-and-response, not just prevention.
When
Your detection coverage feels random, and you want to systematically build coverage against MITRE ATT&CK techniques relevant to your industry.
Choose
Purple team. Co-developed detection content beats off-the-shelf rules.
When
You're under-resourced and need to pick one.
Choose
Pen test first. Without addressing baseline weaknesses, the red team will just exploit them and you'll have spent twice the money for the same finding.
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