The Secure by Design Framework is an approach that ensures security is built into digital systems from the very beginning, rather than added as an afterthought. It embeds cybersecurity principles throughout the entire lifecycle of a service, product, or system — from initial concept and architecture to development, deployment, and ongoing operation.
Its core purpose is to create systems that are inherently secure, resilient, and trustworthy, reducing vulnerabilities and long‑term risk.
The Secure by Design Framework is a modern cybersecurity approach that integrates security into every stage of digital service and system development. Instead of treating security as a final checklist, Secure by Design ensures that risks are identified early, controls are embedded from the outset, and systems are continuously assessed throughout their lifecycle.
This framework promotes proactive risk management, strong architectural foundations, and a culture where security is a shared responsibility across teams. By adopting Secure by Design, organisations build digital services that are more resilient, cost‑effective to maintain, and better protected against evolving cyber threats.
Security is integrated into planning, architecture, and design — not bolted on later.
Threats and risks are evaluated throughout the lifecycle, not only at project milestones.
Architectural and technical controls are defined early and validated continuously.
Security is everyone’s responsibility — delivery teams, architects, engineers, and suppliers.
Security is verified through continuous testing, validation, and monitoring.
Foundational expectations for embedding security into digital delivery.
Threat modelling, architectural reviews, and early control selection.
Security embedded from business case → design → build → deploy → operate.
Understanding and managing supplier risks.
Continuous monitoring, improvement, and adaptation to new threats.
Reduces vulnerabilities early (cheaper and easier to fix)
Builds resilient, trustworthy digital services
Aligns with government and industry security expectations
Supports compliance with modern cyber strategies
Creates a culture of proactive, shared security responsibility