Senior security design work, in a single session.
Describe your system and Tessera Design produces a connected, evidence-backed security model — the kind of work that takes a senior consultant weeks. You review and challenge every part of it, and nothing is final until you've signed it off.
Threat model
STRIDE
Weaknesses
CWE
Risk assessment
OWASP rating
Requirements
derived from risk
Controls
that satisfy each
Security architecture
the deliverable
Describe → generate → challenge → export.
You bring the system; Tessera does the methodical work; you stay in control of every decision.
Describe your system
A written description, design docs, architecture diagrams, meeting notes. Tessera builds a working model of your components, boundaries and data flows.
It builds the model
Threats, then weaknesses, then risk, then the requirements and controls — as one linked model. Every element derived from something; nothing floats.
You challenge & validate
Question any element; it defends with evidence or concedes and corrects. The security-critical elements can't pass until you've signed them off.
Export the deliverable
A branded, client-ready document with the traceability intact — and an issued version that's pinned and can't be quietly rewritten.
You can argue with it.
Tessera doesn't hand you findings to accept on trust. Challenge any element and it answers on the record — defending with evidence, or conceding and correcting. Disagreement is a first-class move, kept as part of the model's history.
This risk looks overstated — the flow doesn't cross a trust boundary.
It does: the admin interface reaches the database directly, and that path carries unauthenticated requests from the DMZ.
You're right that the export job is internal-only — I've lowered that second risk and removed the external-exposure rationale.
For security teams — with or without an architect.
Producing a security design from scratch is a rare, senior skill; validating one is a skill many capable technical people already have. Tessera does the producing — so an architect covers far more ground, and a team without one can still produce and validate the evidence they need. The judgement doesn't go away; it changes who can apply it.
Security architects & specialists
Draft a full model in a fraction of the time, then spend your expertise where it counts — refining and validating. Cover more systems, faster.
Consultants, MSPs & vCISOs
Deliver client security design and threat-modelling faster, under your own brand, and cover more clients with defensible, traceable evidence.
White-label exportTeams without a dedicated architect
A capable sysadmin, platform engineer or security-minded developer can produce and validate the security-design evidence a regulator or customer increasingly demands — in an architect's absence.
The artefact that outlives the session.
- ✓ Your branding — logo, colours, consultancy name.
- ✓ The full model, or the client-facing subset you choose.
- ✓ Traceability intact — reasoning followed end to end.
- ✓ Mitigation status stated honestly — designed vs implemented, no over-claiming.
- ✓ Word & PDF, plus the diagrams as rendered.
- ✓ An issued version is pinned — it can't be quietly rewritten.
- ✓ Re-run on a changed system and see exactly what moved.
- ✓ Your frameworks carried through to the mapping.
Run Tessera Design on your own system.
We onboard pilots by invitation. Tell us who you are and what you'd point it at, and we'll set you up.