Security you can prove, not just promise.
We test what you have, find what others miss, and help you fix it — across 4 jurisdictions.
Six ways we keep you secure.
Pick the one that fits the problem — every engagement ends with something you can act on.
Security audits & assessments
Posture reviews, configuration and cloud audits, controls testing.
Learn more →Penetration testing & technical assessment
Adversarial testing of applications, networks and cloud.
Learn more →Investigations & digital forensics
Incident investigation, evidence handling, document and metadata forensics, OSINT.
Learn more →Compliance & GRC
ISO 27001, GDPR and sector frameworks, policy, audit-readiness.
Learn more →Digitalization & secure transformation
Modernising systems with security built in from the start.
Learn more →Advisory & managed security
Ongoing security partnership and a named point of contact.
Learn more →We don’t just advise — we build.
Tooling for the problems we keep meeting in the field, held to the same standard as our advice.
Visit GSI Labs→A straight line from question to fix.
Assess
We scope the work, establish the facts, and agree what good looks like.
Report
Findings ranked by risk, in language your engineers and your board can both use.
Remediate
We help you fix what matters, then verify it is fixed.
Held to recognised standards.
Marks shown as held are set by the firm — placeholders below until confirmed.
Information security management
Auditing and advising to the standard.
[[ISO 27001 STATUS: confirm certified / aligned]]
Cyber Essentials
UK baseline technical controls.
[[CYBER ESSENTIALS STATUS: confirm]]
Data protection
ICO registration and data-protection practice.
[[ICO REGISTRATION: confirm number]]
Let’s talk about what you’re protecting.
Tell us the shape of the problem — we’ll come back with next steps, not a sales pitch.
Request a consultation→