Engineering security for systems that matter.
HexaSec is a UK cyber security and AI engineering company building local-first assurance systems, defensive research methods and inspectable technical evidence for high-trust environments.
Focused systems. Explicit boundaries.
HexaSec concentrates on a small number of security capabilities where repeatability, explicit control and inspectable evidence matter.
01 / PRODUCTSTATUS / ACTIVE PRODUCT AI ASSURANCE GATE
Repeatable security regression for LLM, RAG and tool-enabled assistants.
VIEW PRODUCT02 / EVIDENCE ENGINEERINGSTATUS / ACTIVE CAPABILITY EVIDENCE ENGINEERING
Inspectable release records, traceability and retained technical artefacts.
VIEW EVIDENCE03 / RESEARCHSTATUS / ACTIVE / EXPLORATORY RESEARCH
Security research that can become methods, prototypes and engineering capability.
VIEW RESEARCH
Built around control, not convenience.
HexaSec favours security systems that can operate close to the environments they evaluate, expose their decision logic and leave inspectable technical evidence behind.
- 01 /
LOCAL-FIRST
Keep assurance close to the system being evaluated where the environment requires it.
- 02 /
EXPLICIT CONTROL
Use defined detectors, policy and release logic rather than opaque model judgement alone.
- 03 /
INSPECTABLE
Make the evidence behind a security decision available for technical review.
- 04 /
BOUNDED
Keep research, testing and automation inside explicit operational and technical boundaries.
LOCAL-FIRST EXPLICIT CONTROL INSPECTABLE BOUNDED
These are company positioning principles, not universal guarantees.
A small company with a precise mandate.
HexaSec Ltd is a United Kingdom cyber security and AI engineering company focused on AI assurance, evidence engineering and defensive security research.
- LEGAL ENTITY
- HEXASEC LTD
- JURISDICTION
- ENGLAND & WALES
- DISCIPLINE
- AI + CYBER SECURITY
- CURRENT PRODUCT
- AI ASSURANCE GATE
- ENGINEERING CAPABILITY
- EVIDENCE ENGINEERING
- RESEARCH
- DEFENSIVE AI SECURITY
- WEBSITE
- HEXASEC.CO.UK
- OPERATING MODEL
- RESEARCH-LED ENGINEERING
COMPANY NUMBER16225807
REGISTERED OFFICE71-75 Shelton Street, Covent Garden, London, United Kingdom, WC2H 9JQ
PUBLIC COMPANY RECORD / CAPABILITY POSITIONING / NO PERFORMANCE CLAIMS
Start with one defined problem.
HexaSec engagements begin with a bounded technical question: an AI workflow to evaluate, a security problem to investigate or a research area to explore.
- 01 /
AAG PILOT
Evaluate one agreed AI workflow against an agreed threat model and inspect the resulting decision evidence.
REQUEST A PILOT - 02 /
RESEARCH
Discuss a bounded defensive research question, prototype or technical collaboration.
DISCUSS RESEARCH - 03 /
GENERAL
Company, technical or commercial enquiries.
CONTACT HEXASEC
ENGAGEMENT MODEL
SCOPE DEFINE TEST / RESEARCH EVIDENCE REVIEW
Use this only as an engagement framing, not a contractual delivery promise.
