Our expertise
Make security part of the design.
Understand the system you are building, the information it handles and the threats it may face. We help teams make security decisions early and keep those decisions traceable as the design evolves.
Secure by Design & threat modelling
Who this service is for
When planning a new application, integrating services, handling sensitive information or reviewing a significant system change.
What the work supports
Outcomes
Shared system understanding
Map components, data flows, dependencies and trust boundaries.
Relevant design decisions
Connect realistic threats to proportionate countermeasures.
Traceable assurance
Record assumptions, decisions and the checks needed before release.
Engagement outputs
Deliverables
Scope and deliverables are agreed to reflect your objectives and environment.
- System definition, architecture and data-flow views
- A structured threat model with assumptions and relevant scenarios
- Prioritised security requirements and design recommendations
- A validation plan and handover of remaining risks
How we work
How We Work
Activities and depth vary by engagement. The method keeps priorities, delivery and evidence connected.
01
Assess
Understand the environment, information, objectives and current controls.
02
Prioritise
Agree the risks and actions that matter most for your organisation.
03
Implement
Support practical changes with clear ownership and delivery priorities.
04
Assure
Review the evidence, validate progress and identify what needs attention next.
Before we begin
Frequently Asked Questions
Do we need a particular threat modelling tool?
The method is selected for your system and team. Tooling can help maintain traceability, but the engagement begins with understanding the design and decisions required.
Can this support an existing system?
Yes. A threat model can inform a redesign, significant change or review of an existing service. The scope is tailored to the available information and your objectives.
Start a conversation
Start with a focused conversation.
Discuss your environment, priorities and the support you need. We can help identify the appropriate scope and next steps.