Security Architecture
For teams building a new system, security is cheapest to fix at the design stage. HarLyn's Security Architecture review models threats and trust boundaries against your architecture before code hardens into technical debt. Led by Cybersecurity Assurance Lead Nazline Mwita.
System design → data flow mapping → trust boundary identification → threat model → architectural recommendations → design sign-off
What we deliver
- Documented threat model for the proposed or in-progress system
- Trust-boundary and data-flow diagrams
- Authentication and authorization boundary design review
- Encryption-at-rest and in-transit recommendations
- Secrets handling and least-privilege access design
- Written architectural recommendations before build or ship
Frameworks & Methodology
Related capabilities
Frequently asked
What is 'secure-by-design' architecture review?
It's a review of a system's design before or while it's being built — identifying trust boundaries, data flows, and attack surface at the architecture level, so security is designed in rather than patched on afterward.
How is this different from a Security Assessment or Cybersecurity Audit?
Assessments and audits test an existing system for vulnerabilities. Security Architecture review happens earlier — for teams building a new system or feature — modeling threats and trust boundaries against the design itself before the code is written or shipped.
What does a Security Architecture engagement produce?
A documented threat model, a trust-boundary and data-flow diagram, identified high-risk components, and specific architectural recommendations — authentication and authorization boundaries, encryption at rest/in transit, secrets handling, and least-privilege access design.
When should we bring you in — before or after building?
Ideally before: reviewing architecture at the design stage is cheaper than retrofitting security into a shipped system. We also review in-progress builds and flag structural risks before they harden into technical debt.
Who leads Security Architecture review at HarLyn Digital Partners?
Nazline Mwita, Co-Founder and Cybersecurity Assurance Lead, a CompTIA Security+ certified analyst who leads all threat modeling and secure system design work at HarLyn.
Designing a new system and want it secure from day one?
Start with the 48-hour Secure Digital Workflow Assessment, or reach out directly to Nazline.