Penetration Testing

Delivered by specialists with backgrounds in UK Special Forces, government, and defence, ensuring the highest professional standards.

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Our Red Team operations, often referred to as penetration testing, are designed to rigorously assess the physical, technical, and human security measures protecting your organisation. These operations simulate real-world threats in a controlled, ethical, and legally compliant manner to expose vulnerabilities that could be exploited by hostile actors.

Pen Testing Service

S2K's penetration testing services are led by former UK Special Forces and Home Office surveillance professionals with extensive experience in hostile environment operations, infiltration techniques, and counter-intelligence methodologies. Every engagement is bespoke, developed in collaboration with the client to define clear objectives, boundaries, and success criteria.

Operations may include covert reconnaissance, lock bypass, tailgating, impersonation, and secure area breaches, all conducted with a strict chain of custody and full debriefing protocols.

We test and challenge:

  • Physical security (access control, alarm systems, perimeter integrity)

  • Personnel awareness and insider threat resilience

  • Procedural vulnerabilities and access routines

  • Digital hygiene, social engineering susceptibility, and information leakage

At S2K, we don’t offer generic off-the-shelf audits. We offer high-fidelity red team simulations rooted in real operational experience.

The result: meaningful, actionable feedback that helps organisations strengthen their defences before someone with intent tests them for real. Our track record includes successful red team deployments across government, corporate, and critical infrastructure sectors.

Red Team Simulations

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FAQ’s

  • Penetration Testing, often delivered as part of Red Team operations, simulates real-world threats to assess your organisation’s physical, technical, and human security measures in a controlled, ethical, and legally compliant way.

  • Unlike generic audits, our approach uses high-fidelity Red Team simulations rooted in real operational experience, challenging your defences through covert reconnaissance, social engineering, access attempts, and procedural testing.

  • We test a broad range of potential vulnerabilities, including physical access controls, alarm systems, perimeter security, personnel awareness and insider threat resilience, procedural weaknesses, digital hygiene, and susceptibility to social engineering.

  • Our penetration testing services are led by our team of experienced specialists from UK Special Forces and former Home Office surveillance professionals with extensive backgrounds in counter-intelligence, hostile environment operations, and security assessment.

  • Yes, all engagements are conducted with prior client consent, within agreed scopes and boundaries, and in compliance with applicable UK laws and regulations. The process is managed ethically and professionally at every stage.


  • We plan each engagement in collaboration with you to minimise disruption. The level of impact depends on scope and complexity, but our emphasis is on thorough assessment without unnecessary operational interruption. 

  • You will receive meaningful, actionable feedback that highlights vulnerabilities and provides prioritised recommendations to strengthen your physical and procedural security before hostile actors can exploit them.

  • Yes. Part of our methodology includes evaluating human vulnerabilities, such as social engineering susceptibility, procedure adherence, and insider threat resilience.

  • The timeframe varies according to your organisation’s size, the scope of testing, and the complexity of environments being assessed. The schedule is agreed as part of the project scoping process.

  • Contact us to arrange an initial consultation. We’ll collaboratively define objectives, boundaries, and success criteria before providing a tailored proposal relevant to your security needs. 

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    Each service is delivered with precision and professionalism, tailored to meet the unique demands of our clients in any environment.