Trust zones
Segmentation, privilege levels, administration paths, exposed boundaries and assumptions between environments.
Architecture audit
Analyze the structure of an information system before weaknesses become systemic.
Taking a step back
An architecture audit looks beyond isolated vulnerabilities. It studies flows, dependencies, trust boundaries and design decisions that shape long-term security.
The goal is to identify structural risks: excessive trust between zones, unclear administration paths, fragile dependencies, weak segmentation or single points of failure.
The mission helps teams make decisions: what to simplify, segment, monitor, document or redesign to reduce systemic exposure.
What is analyzed
Critical flows
Data movements, authentication flows, dependencies, third-party links and sensitive integrations.
Resilience
Failure modes, incident paths, logging, monitoring, backups and operational continuity.
Governance of changes
How architecture decisions are documented, validated and reviewed over time.
Working method
Documentation review
Existing diagrams, procedures, inventories and policies are examined first to understand the intended model.
Interviews
Discussions with technical and business stakeholders reveal constraints, informal practices and operational reality.
Risk scenarios
The architecture is challenged through plausible attack and failure scenarios.
Useful references
- Defense in depth and least privilege
- Zero-trust principles when they are relevant and realistic
- ANSSI guidance and architecture security practices
- Security-by-design and resilience principles
Result
Architecture risks
A clear view of structural weaknesses and the scenarios they make possible.
Decision support
Recommendations adapted to priorities, constraints and the organization’s maturity.
Roadmap
A practical path to improve security over time without pretending everything can be rebuilt at once.
From architecture review to roadmap
Prioritized scenarios
The analysis links design weaknesses to realistic incident or attack scenarios so decision-makers can see which structural risks matter first.
Segmentation roadmap
Recommendations can define target zones, administration paths, filtering principles and transition steps without pretending that everything must be rebuilt at once.
Identity and administration
Special attention is paid to privileged paths, shared administration models, excessive trust and dependencies that could turn one compromise into a larger incident.
Resilience choices
Backups, monitoring, logging, recovery assumptions and critical dependencies are reviewed as part of security, not as disconnected operational topics.
Decision support
The deliverable gives technical teams and leadership a shared basis for arbitrating investment, accepting residual risk or planning deeper technical tests.
Follow-up validation
After remediation, targeted reviews or penetration tests can verify that the new architecture actually reduces reachable compromise paths.