Security-exercise buyer guide
Compare penetration testing, threat-led penetration testing, purple teaming and red teaming by objective, realism, collaboration, governance and readiness.
Questions before procurement
Answer these before comparing suppliers or prices. They expose where ownership, evidence and expectations are still unclear.
Speak to usChoose a penetration test for the former and a collaborative or covert exercise for the latter.
If not, establish the technical baseline before investing in a full red-team operation.
Purple teaming maximises learning; red teaming measures performance under controlled uncertainty.
Complex exercises need a named white cell, deconfliction, exclusions, stop conditions and escalation routes.
Side-by-side view
The descriptions are category-level guidance, not claims about every provider. Confirm the precise scope, people, technology, evidence and exclusions before appointing anyone.
| Decision factor | Penetration test | Threat-led test | Purple team | Red team |
|---|---|---|---|---|
| Primary question | What is exploitable? | Can relevant techniques work? | Can we improve detection? | Can an adversary reach the objective? |
| Scope | Defined technical systems | Defined and threat informed | Selected techniques and controls | Objective led across agreed attack surfaces |
| Defender awareness | Usually known | Usually known | Collaborative | Restricted to the white cell |
| Operational realism | Moderate | Moderate to high | Controlled and transparent | Highest within agreed safety limits |
| Detection improvement | Secondary | Can be reviewed | Core outcome | Measured through observed response |
| Governance burden | Standard rules of engagement | Enhanced threat and scope control | Workshop and evidence coordination | White cell, deconfliction and escalation |
| Baseline maturity | Suitable at most maturity levels | Established technical baseline | Active defensive capability | Mature prevention, detection and response |
| Typical output | Findings and remediation | Threat-relevant attack paths | Detection gaps and tuned controls | Objective evidence and resilience improvements |
Use a penetration test to find exploitable weaknesses in a defined technical scope. Use a threat-led test when relevant attacker techniques should shape that scope. Use purple teaming to improve detections collaboratively. Use red teaming when a mature organisation needs to measure whether people, processes and technology can stop a covert attacker reaching an agreed objective.
Where Pentesys fits
Pentesys selects the least complex exercise that can answer the resilience question. Scope, rules of engagement, evidence, technique coverage and the resulting improvement backlog remain connected through the Pentesys Portal.
FAQ
No. Red teaming is most useful when a reasonable security baseline and detection capability already exist. A penetration test may produce more immediate value where fundamental technical weaknesses are still unknown.
It is different rather than simply easier. Purple teaming reduces secrecy to accelerate learning, while red teaming preserves controlled uncertainty to measure real detection and response.
TIBER-aligned work adds a formal intelligence-led and governance framework for relevant organisations. It is not merely a larger red team and should be scoped with the appropriate regulatory and internal stakeholders.
Trusted experience
Pentesys has continuously performed admirably during our collaboration, giving us faith in their knowledge. They delivered work that above our expectations by approaching each project with a deep understanding of our specifications. Their team demonstrated a remarkable degree of proficiency by effectively pinpointing weaknesses and offering practical suggestions to reduce possible hazards.
Unlike previous pentests that produced generic outputs, this engagement gave us clear, prioritised actions with real-world attack scenarios. The platform visibility into assets, vulnerabilities and remediation progress has helped us mature our security posture significantly. The team were professional, responsive, and genuinely cared about improving our security rather than just ticking a box.
The red team and external attack surface management work highlighted blind spots we didn't know existed. What stood out was the strategic guidance alongside the technical delivery – helping us shape a longer-term security roadmap rather than a one-off engagement. This felt like a partnership, not just a transactional assessment.
Pentesys has continuously produced excellent work. Their group demonstrated extraordinary technical proficiency by spotting crucial flaws and offering clever fixes that greatly strengthened our security stance. Their meticulous approach and attention to detail ensured that every facet of the project was covered in full.
We engaged Pentesys and the team for a complex penetration test and adversary simulation. The quality of the technical findings, realism of the attack paths, and clarity of reporting were outstanding. The recommendations were practical and mapped clearly to business risk, which made board-level conversations much easier. We've since built Pentesys into our ongoing security assurance programme.
Assurance that joins up
Pentesys combines independent assurance, qualified testers and practical integration with the systems your teams already use.
The next useful step
Tell us what you need to prove, what has already been tested and what your stakeholders expect. We’ll recommend a proportionate route.
Design a realistic attack exercise