Design systems that are secure by structure: reference architectures, defence in depth, threat modelling, design review and zero trust across identity, network and data.
Estimated time: 15–26 months · At about 10 hours a week.
Learning path
Click a topic to see what to learn and where. Mark topics as you go; your progress is saved in this browser only.
Threat model a small web application with STRIDE and produce a mitigation list.
Draw a C4-style diagram of a system with its trust boundaries marked.
Done when you can…
Produce a threat model and control plan for a realistic system.
Explain a design's security using named principles.
Beginner
Secure design principles
Least privilege, defence in depth, fail secure, separation of duties, minimise attack surface and keep it simple. Every design decision should trace to a principle.
Standards, review boards and exception processes keep architecture consistent without blocking delivery. Design the process as carefully as the systems.
Security architecture decides where controls go and how systems fit together so that security holds even when individual parts fail. It works at the level of designs, patterns and principles rather than single tools.
Zero trust is the dominant modern architecture: never trust by network location, always verify identity and device, and grant the least access needed. The role spans threat modelling new designs, reviewing proposals, setting reference patterns and translating risk into technical decisions.
Why it matters
Many breaches come from systems that were insecure by design, not by bug. Organisations need architects who can shape designs before they are built and lead the shift to zero trust across sprawling estates.
Typical job roles
Mid-levelSecurity engineer (design focus)Threat models and reviews designs.
SeniorSecurity architectDesigns security for systems and platforms.
SeniorEnterprise security architectSets reference architectures across the organisation.
LeadChief security architectOwns the architecture vision and standards.
Prerequisites
Broad experience in at least two security domains, such as network, cloud, identity or applications.
How systems are built: infrastructure, applications, identity and data flows.
NIST SP 800-53 Rev. 5The large catalogue of security and privacy controls that many other frameworks map to.
NIST Cybersecurity Framework (CSF) 2.0A common way to describe and improve an organisation's security, organised as Govern, Identify, Protect, Detect, Respond and Recover.
ISO/IEC 27001The international standard for an information security management system (ISMS), and the one organisations get certified against.