Managed Services
Threat Modelling
Security testing tells you where the weaknesses are today. Threat modelling asks a different question, given how this system is designed, where should we expect attackers to go, and what would it cost us if they got there. It shifts security earlier into the design process, helping identify potential threats before systems are built or deployed.
The risk
Why it matters
Vulnerabilities found late, after development, after launch, are typically more costly and disruptive to address. Identifying architectural and design-level risks early means security decisions get made when they're still manageable to act on, not after an incident forces the issue.
Our approach
Threat modelling follows structured methodologies such as STRIDE and considers factors including system architecture, data flows, trust boundaries, and potential attack paths to identify and prioritise security risks.
What's covered
Scope & deliverables
Assessment Scope
- Application & system architecture
- Data flow diagrams & trust boundaries
- Third-party integrations & dependencies
- Design-stage security controls
- Critical business assets and security assumptions
Deliverables
- Threat model documentation with identified risks
- Risk prioritisation with documented threat scenarios
- Mitigation recommendations mapped to design
- Threat model documentation designed to support future system changes and enhancements
Questions
Frequently asked questions
When should threat modelling be done, before or after development?
Ideally before, during the design phase, though it remains valuable for existing systems to identify overlooked risks.
Is Threat Modelling only for new applications?
No. While it's most effective during the design phase, Threat Modelling can also be applied to existing applications and infrastructure to identify architectural risks, validate security assumptions, and support future enhancements.
Do you need access to our source code?
Not necessarily. Threat modelling relies primarily on architecture diagrams, data flows, and system documentation.
How is this different from a penetration test?
Threat modelling identifies design-level risks before they're built. Penetration testing validates whether vulnerabilities exist in a system that already exists.
Can the threat model be reused as our system evolves?
Yes. The model is built to be updated as architecture changes, rather than treated as a one-time exercise.
Go further
Related services
Organizations often pair this engagement with the assessments below for broader coverage.
Web Application Penetration Testing
Manual, attacker-simulated testing of browser-facing applications — authentication, access control, business logic and injection — aligned to the OWASP Top 10 and ASVS.
Learn MoreAPI Penetration Testing
REST, GraphQL and SOAP testing against the OWASP API Security Top 10 — object-level authorization, excessive data exposure and abuse of business logic.
Learn MoreAttack Simulation / Red Teaming
A goal-based, multi-stage simulation of a real adversary, modelled on MITRE ATT&CK — testing whether your controls actually detect, delay and respond.
Learn More
Request a consultation
Tell us what you need assessed and we'll scope an engagement around it — timelines, safeguards, and deliverables agreed before any testing begins.