Secure system architecture and engineering principles
Principles for engineering secure systems should be established, documented and maintained and applied to information system development activities.
Purpose
To ensure systems are designed with security in mind using established security principles.
Implementation Guidance
Apply security design principles (defense in depth, least privilege, fail secure)
Document system architecture and security controls
Review architecture for security weaknesses
Separate security-critical components
Design for resilience and recovery
Recommended Tools
Notion
All-in-one workspace for documentation, policies, and knowledge management. Perfect for startups to manage all ISO 27001 documentation.
Confluence
Enterprise-grade documentation and collaboration platform by Atlassian. Integrates well with Jira for larger organizations.
GitHub
Leading platform for version control and code collaboration. Essential for software development teams.
ISO 27001 Services from the Directory
These providers can help you implement A.8.27 and achieve ISO 27001 certification.

Advisera
Provider of ISO 27001 documentation, training, and consultancy services to help businesses achieve compliance.

Anecdotes
Enterprise agentic GRC platform with 230+ integrations and 40+ pre-mapped frameworks for Fortune 500 compliance programs.

Arrow Cyber Advisors
Arrow Cyber Advisors enables organizations to build measurable cybersecurity maturity and resilience. We specialize in governance, risk and compliance advisory, providing clear security direction, maturity benchmarking, and execution support tailored to regulated and high-risk environments.

Atoro
Atoro offers specialized ISO 27001 certification services for SaaS companies, simplifying compliance with expert tools.

AuditBoard
Enterprise connected risk platform trusted by over 50% of the Fortune 500 for audit, risk, and compliance management.

Auro Security
Most modern product teams, including SaaS, FinTech and cloud-native startups are moving fast, building with AI, and operating in an environment where enterprise buyers, regulators, and investors expect real security. Auro Security exists to help those teams get there. Operating across India and the Middle East, we work with founders, CTOs, and compliance leads to build security programs that hold up under scrutiny, not just on paper. What We Do We offer a focused suite of cybersecurity services: - SOC 2 and ISO 27001 Compliance: End-to-end audit readiness, gap assessments, policy creation, evidence collection support, and continuous monitoring. - VAPT (Vulnerability Assessment and Penetration Testing): Deep technical testing for web apps, mobile apps, APIs, cloud infrastructure, and networks to uncover risks before attackers do. - vCISO Services: Fractional cybersecurity leadership to help you build a security roadmap, manage risk, and meet enterprise expectations as you scale. Who We Serve We primarily work with: SaaS companies and cloud-native startups, FinTech and payments platforms, early-stage teams preparing for enterprise sales or compliance audits.
Related Controls
Other controls in Technological Controls
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