What is Security Architecture Review?

A security architecture review evaluates the design and structure of IT systems to identify security weaknesses, validate controls, and ensure alignment with security principles and compliance requirements.

What is a security architecture review?

A security architecture review is a systematic evaluation of system design, data flows, trust boundaries, and security controls to identify design-level vulnerabilities before or after implementation. It examines authentication, authorization, encryption, network segmentation, and defense-in-depth strategies to ensure the architecture meets security requirements.

When should a security architecture review be conducted?

Reviews should occur during the design phase of new systems, before major architectural changes, during cloud migrations, as part of merger and acquisition due diligence, when adopting new technologies, and periodically for critical systems to validate continued alignment with evolving threat landscapes and security best practices.

What does a security architecture review examine?

Reviews examine network topology and segmentation, authentication and authorization mechanisms, data flow and classification, encryption implementations (in transit and at rest), API security design, identity management architecture, logging and monitoring coverage, disaster recovery design, third-party integration security, and compliance control mapping.

How does architecture review differ from penetration testing?

Architecture review evaluates design and theoretical security, identifying structural weaknesses and missing controls before exploitation occurs. Penetration testing validates whether implemented controls are effective through active exploitation. Architecture reviews catch design flaws that pentests may miss, while pentests reveal implementation gaps that design reviews overlook.

What frameworks guide security architecture reviews?

Key frameworks include SABSA (Sherwood Applied Business Security Architecture), TOGAF Security Architecture, NIST Cybersecurity Framework, Zero Trust Architecture principles (NIST SP 800-207), cloud provider Well-Architected frameworks, and threat modeling methodologies like STRIDE and PASTA that structure the analysis process.

What are common findings in security architecture reviews?

Common findings include insufficient network segmentation allowing lateral movement, missing encryption for sensitive data flows, overly permissive access controls and trust relationships, inadequate logging for security-critical operations, single points of failure in security controls, and missing input validation at trust boundaries between components.

Who should conduct security architecture reviews?

Reviews should be conducted by experienced security architects who understand infrastructure design, application security patterns, cloud architecture, and threat modeling. They should have broad knowledge of attack techniques, defense strategies, and compliance requirements. External reviewers provide objective perspectives free from organizational blind spots.

What deliverables come from a security architecture review?

Deliverables include annotated architecture diagrams highlighting security concerns, a findings report with risk ratings and remediation recommendations, threat model documentation, security control gap analysis, compliance mapping matrix, prioritized roadmap for security improvements, and design pattern recommendations for identified weaknesses.