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Threat modeling & architecture review
Structured analysis of systems before they ship — scaled from a single feature to a whole platform, and kept alive in the repository, not a slide deck.
Independent application security & architecture practice
Security as a property of the architecture, and of every design decision, line of code, pull request, dependency, build, push to production and update.
Build Secure Partners helps product and platform teams build systems that are secure by construction — through threat modeling, secure code review, supply chain hardening, and regulation translated into engineering work your teams can ship.
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- ISO/IEC 27001
- NIS2 Directive
- OWASP ASVS
- DORA
- OWASP Top 10
- Cyber Resilience Act
- SLSA
- OWASP SAMM
- CWE Top 25
- NIST SSDF
- IEC 62443
- GDPR · Art. 25
01Practice
Six disciplines. One outcome: fewer decisions you have to undo.
Most security debt is an architecture decision made without the right question on the table. We bring the question early, while changing the answer is still cheap.
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Application security
Secure code review, API security and verification against OWASP ASVS — findings ranked by exploitability and fixed as patterns, not one-offs.
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Secure development lifecycle
Requirements, review practices and pipeline guardrails that fit how your teams already deliver — so the secure path is also the fastest one.
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Software supply chain security
Know what you ship and where it came from — dependency risk, SBOMs, signed builds and provenance, wired into the pipeline rather than audited after.
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Regulatory engineering
NIS2, DORA and the Cyber Resilience Act translated into backlog items with owners and acceptance criteria — evidence produced by delivery, not by binders.
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Fractional security architecture
Senior architecture capacity embedded in your teams for a defined period — with a clear handover, so capability stays when we leave.
02Method
From whiteboard to evidence, in four moves.
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Step 01 · Model
Map what you are actually building.
Data flows, trust boundaries and the assumptions everything rests on — captured as one shared threat model that engineering owns and keeps current.
- System context & data-flow model
- Ranked threat register
- Assumption log
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Step 02 · Decide
Turn risk into design decisions.
Every material risk becomes an architecture decision with explicit trade-offs, recorded so teams can challenge it, reuse it, and revisit it when the context changes.
- Architecture decision records
- Target security architecture
- Prioritised roadmap
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Step 03 · Embed
Make the secure path the easy path.
Decisions become reference patterns, pipeline guardrails and sensible defaults. Teams move faster because the hard questions already have good answers.
- Reference implementations
- Pipeline policies
- Team playbooks
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Step 04 · Prove
Produce evidence as a by-product.
Each requirement traces to a control and each control to a test. When the auditor or regulator asks, the answer already exists — generated by the way you work.
- Requirement-to-test traceability
- Control evidence pipeline
- Regulatory mapping
03Design review
A design review, in miniature.
Five findings from a typical first pass over a commerce platform — and the architectural changes that close them. Switch views, or hover any marker.
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01
Admin console exposed
Found — the operator console is reachable straight from the internet, protected by a password alone.
Changed — moved behind identity-aware access; sessions are short-lived and bound to managed devices.
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02
One credential for all data
Found — every service reaches the primary store with the same high-privilege account.
Changed — per-service identities with least-privilege grants, issued at runtime and never stored.
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03
Webhook trusted by default
Found — payment callbacks are accepted without verifying who sent them.
Changed — signatures verified, replays rejected, amounts reconciled before any state changes.
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04
Tokens forwarded as-is
Found — the customer session token travels unchanged into internal services, widening its reach.
Changed — the gateway exchanges it for short-lived tokens scoped to one downstream audience.
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05
No record of data exports
Found — bulk reads of customer data leave no trace anyone could review later.
Changed — an append-only audit log captures sensitive operations, with alerts on unusual volume.
04Outcomes
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Typical first engagement, from kickoff to a reviewed architecture and a prioritised backlog.
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Shared threat model per product, versioned alongside the code it describes.
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Regulatory frameworks mapped onto a single, de-duplicated control set.
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Of controls traceable to a requirement and to the test that proves it.
The cheapest vulnerability is the one that never makes it past the whiteboard.
06Contact
Start with a conversation about your architecture.
Tell us what you are building and where it feels uncertain. You will hear back from a practitioner within one working day — not a sales team.