Independent technical assurance for complex environments
Tarian helps organisations answer one question: if someone genuinely wanted to compromise your environment, could they?
Four principles that shape every engagement
We don’t measure security by the number of vulnerabilities we discover. We measure it by how effectively an attacker could achieve their objective.
Engineering-led
We believe effective security testing begins with understanding how complex systems are designed, operate and fail. Our assessments are built on technical depth — not automated scan results.
Realistic
Our assessments are designed to reflect the techniques, decision making and persistence of a capable attacker. We simulate realistic adversary behaviour, not tool output.
High Assurance
You’re not testing because a framework requires it. You’re testing because you genuinely want to know whether your environment is secure. We work with organisations who need the real answer.
Clear
Technical excellence has little value if the findings cannot be understood and acted upon. Our reports are written clearly for engineers, senior leadership, and C-suite — without sacrificing accuracy.
We don’t simply identify vulnerabilities
Tarian exists to provide genuine technical assurance. We understand complex environments, identify realistic attack paths, validate security controls, and demonstrate business risk in terms that drive meaningful action.
“Tarian doesn’t just identify vulnerabilities. We understand how complex environments can be compromised, validate the risks that matter, and provide organisations with the confidence that their security controls will perform when it counts.”
Engineering-led assessments
Every engagement is driven by technical depth. We map genuine attack paths through your architecture — the kind a capable attacker would take, not a tool configuration would produce.
Practical, actionable reporting
Findings are written for engineers and C-suite alike — technically accurate, clearly prioritised, and focused on what your organisation can realistically do to improve its security posture.
Independent, honest advice
Our findings reflect what the evidence shows — nothing more, nothing less. We do not adjust our conclusions based on the outcome an engagement produces. Our reputation is built on the integrity of our assessments.
Offensive security across the full attack surface
Every assessment is scoped to your environment, your architecture, and the realistic threats you face.
“If someone genuinely wanted to compromise our environment, could they?”
Penetration Testing
Manual penetration testing across external and internal infrastructure, web applications, APIs, cloud environments, wireless, and network segmentation. Every assessment is engineered around realistic attack scenarios — not a checklist of scan results.
Learn moreOT / ICS Security
Security assessments of operational technology, industrial control systems, and SCADA environments. Conducted with a thorough understanding of operational constraints, safety boundaries, and the genuine consequences of disruption to critical processes.
Learn moreRed Teaming & Simulated Targeted Attack
Objective-driven adversary simulation — including Simulated Targeted Attack exercises — that tests your people, processes, and technology against realistic, targeted threat scenarios beyond the scope of standard penetration testing.
Learn morePurple Teaming
Collaborative exercises conducted alongside your security operations team, validating detection and response capability against specific attack techniques and improving defensive coverage through structured knowledge transfer.
Learn morePhysical Security Assessments
Assessment of physical access controls, perimeter security, tailgating, and social engineering resilience — examining the boundary between physical and cyber risk across your sites and facilities.
Learn moreBuilt for technically demanding environments
“These people understand how complex systems actually fail.”
Tarian is a specialist offensive security consultancy based in South Wales, founded on over a decade of experience across enterprise, industrial, operational technology, and critical infrastructure environments. We work with organisations where security failures carry genuine operational consequences.
Learn more about Tarian
Complex environments require specialist expertise
We work with organisations where the consequences of a security failure extend beyond data loss.
Start with a conversation
If your organisation needs independent technical assurance from consultants who will give you a straight answer, we would like to hear from you.