Description

A focused course, tailored for you

The Security Engineer Threat Model Review Playbook

Run threat-model reviews on payments, checkout, and app-platform code that other security engineers ask to copy.

You are the security engineer in a PR review that decides whether a checkout-flow change ships. The threat-model section is half a page. You have until end-of-week to bless it, send it back, or rewrite it yourself.

$199 one-time

Tailored to your situation. Access within 24 hours. 30-day money-back.

Includes a hand-built implementation playbook delivered alongside course access, generated for your specific situation.

Why this course

Security engineers on commerce platforms sit at a junction nobody else covers cleanly. The application-security team writes generic STRIDE guidance. The payments team thinks in card-brand controls. The app-platform team thinks in OAuth scopes and partner risk. The fraud team thinks in signals and chargeback rates. When a PR lands that touches checkout, the wallet picker, the storefront API, the app-bridge, or a webhook surface, you are the one who has to translate across all four worlds in one review document, and do it fast enough that the author does not route around you. The work that wins is not more STRIDE bullets. It is a review that names a specific adversary, a specific payment intent or merchant action, a specific control that fails or holds, and a specific code path the author can fix without a meeting. That kind of review is what gets cited in incident retros and what Staff engineers start copying. The skill is not taught anywhere in a clean form, so most security engineers build it slowly across years of incidents. The course compresses it.

What you walk away with

Run a threat-model review on a checkout or payments PR that the author treats as a deliverable, not a gate.
Write adversary profiles tied to specific commerce surfaces: wallet picker, storefront API, app-bridge, webhook subscription, partner OAuth scope.
Map every finding in your review to PCI DSS 4.0 requirements, SOC 2 CC controls, and the merchant SAQ-D scope boundary so audit teams can pick up the trail.
Leave a review trail in the PR, in the design doc, and in a Slack canvas that a Staff engineer or auditor can read six months later without you in the room.
Reduce the number of post-launch security incidents traceable to a missed threat-model finding to something you can name and defend.

The 12 modules

Module 1. The commerce-platform threat-model context

Why threat-model reviews on commerce code are different from generic SaaS app-sec reviews. The four worlds you sit between: application security, payments and card-brand controls, app-platform partner risk, and fraud. The kinds of PRs that absolutely need a real review (checkout flow, wallet integration, storefront and admin API surface, app-bridge, webhook subscriptions, OAuth scope additions) and the kinds you can rubber-stamp. Where review work fits in a security-engineer career ladder.

Module 2. Reading a commerce PR fast enough to review it well

A two-pass reading protocol for commerce PRs: first pass for the data flow and the trust boundary changes, second pass for the control surface. How to find the actual security-relevant diff in a forty-file PR. Reading the design doc and the PRD before the code so the review is not just style nits. How to ask for the threat-model artefact upfront so you are not reverse-engineering it from the diff.

Module 3. Adversary profiles for commerce surfaces

Writing adversary profiles that are specific enough to be useful: a fraudster ATO-ing a merchant admin account, a malicious app developer abusing a webhook subscription, a partner with an over-scoped OAuth token, a checkout-page injection from a compromised script tag, a card-testing campaign against the storefront API. How to source the adversary library from real incidents, fraud-team intel, and the bug-bounty queue rather than from generic STRIDE.

Module 4. Threat modelling the checkout and payments flow

How to model threats against the checkout sequence end to end: cart, payment-method selection, payment-intent creation, 3DS challenge, capture, refund, dispute. The specific failure modes that map to merchant funds at risk versus to platform liability versus to brand fines. How a wallet integration or a Buy-with-Prime-style parity change reshapes the threat surface and what the review must catch.

Module 5. Threat modelling the app-platform and OAuth surface

Reviewing PRs that change OAuth scopes, webhook subscriptions, app-bridge messages, admin-API permission boundaries, or partner-app data access. Where over-scoping happens in practice. Reviewing what a malicious or compromised partner app can do with the scope being added. The specific control questions to raise on every app-platform PR so the answer is in the doc before the review meeting.

Module 6. Threat modelling storefront, admin API, and webhook surfaces

Reviewing PRs that touch the storefront API, the admin API, GraphQL resolvers, REST endpoints, and the webhook delivery pipeline. Rate-limit and abuse-signal review. Authentication and session-token handling for merchant-staff sessions versus partner-app sessions versus buyer sessions. What good looks like in a webhook signing and replay-protection review.

Module 7. Mapping findings to PCI DSS 4.0

How to translate a threat-model finding on a payments-touching PR into the PCI DSS 4.0 requirement it implicates. The requirements that come up most in checkout and payments reviews: 6.4 application security, 8 identity, 11 vulnerability and pen-test, 12 governance. How to phrase a finding so the PCI lead, the QSA, and the engineering author all read it the same way. How SAQ-D scope decisions flow back into review priorities.

Module 8. Mapping findings to SOC 2 and merchant-trust controls

Translating findings into the SOC 2 Common Criteria and the platform-trust controls merchants care about. Which CC controls show up in checkout and admin-API reviews. How to phrase a finding so the SOC 2 audit team can pick it up as evidence of control operation. How the public trust page and merchant security posture documents inherit from the review trail you leave.

Module 9. Writing the review document and the Slack canvas

The two artefacts the review produces: an inline review on the PR with named findings tied to code paths, and a Slack canvas in the team channel that lists the adversaries considered, the controls relied on, the open risks, and the decision. Why both matter. Templates for each. How to write findings the author can act on without a meeting and how to record decisions in a form that survives a handover.

Module 10. Running the review meeting (when there is one)

When a review is heavy enough to warrant a synchronous session, how to run it: who is in the room (engineering author, app-sec peer, PCI lead, fraud, sometimes a Staff engineer), what artefacts everyone reads beforehand, the order of questions, how to land on a decision and not relitigate it. How to keep the review on the actual threat model and out of style debates.

Module 11. Handover, repeatability, and ladder evidence

Leaving a review trail that survives team rotation and that an auditor or a new security engineer can pick up. Building an internal review-pattern library so the same threat-model questions get asked every time without you in the room. How review work shows up in promotion packets for security engineers: scope, impact, named launches gated or unblocked, incidents prevented. How to write the review work into your own performance record.

Module 12. The implementation playbook fitted to your stack

The hand-built playbook that ships with course access takes the templates, the adversary library, the control-mapping cheatsheets, the review-doc and Slack-canvas templates, and fits them to a security engineer at a commerce or payments platform. Real surfaces named (checkout, wallet picker, storefront and admin API, app-bridge, webhook pipeline, OAuth scope catalogue), real adversaries named, real PCI and SOC 2 mappings filled in. So the first review you run after the course is a deliverable, not a draft.

How this addresses your situation

Specific modules that map to what you said you are dealing with.

A senior engineer drops a forty-page PRD on a checkout-flow parity change in your review queue and the threat-model section is half a page.

A partner-app team wants a new OAuth scope added that touches merchant order data and you have to decide what the review needs to cover.

The PCI lead asks you to map last quarter's threat-model findings to PCI DSS 4.0 requirements for the QSA, and you do not have a clean trail.

A Staff engineer asks you to write the review-pattern guide so the rest of the security-engineering team can run reviews to your bar without you in every meeting.

What you get with this course

Twelve written modules covering the full security-engineer review workflow on a commerce or payments platform.
Downloadable review-document and Slack-canvas templates fitted to checkout, payments, app-platform, and storefront-API PRs.
An adversary-profile library covering the commerce surfaces named in the modules.
PCI DSS 4.0 and SOC 2 Common Criteria mapping cheatsheets keyed to the review patterns.
A hand-built implementation playbook that fits the templates and mappings to a security-engineer workflow on a commerce platform.

What you will have in hand by Day 1, Week 1, Month 1

Within 24 hours your account in the learning environment is provisioned and the tailored implementation playbook is delivered alongside it.

Modules 1 to 4 in week one, focused on context and reading PRs.

Modules 5 to 8 in week two, focused on threat-modelling the commerce surfaces and mapping to PCI and SOC 2.

Modules 9 to 12 in week three, focused on review documentation, meetings, handover, and the implementation playbook.

Before and after

Before

Threat-model reviews are a half-page checklist the author wrote in a hurry, a STRIDE table you fill in after the fact, and a PR comment thread that nobody reads after the launch. Findings disappear into the merge log. The PCI lead asks for evidence and you reconstruct it from memory.

After

Threat-model reviews are a named deliverable the author asks for upfront. The review names the adversary, the surface, the control that holds or fails, and the code path that needs to change. The Slack canvas in the team channel records the decision. The PCI and SOC 2 audit teams pick the trail up without you in the room. Staff engineers start copying the pattern.

What happens if you do not address this

Without a real review pattern, the next checkout or app-platform PR ships with a control gap that surfaces in an incident retro, a PCI finding, or a merchant security-questionnaire response, and the security-engineering team owns the cleanup. Review work also stops showing up in your promotion packet because the artefacts to point to are not there.

Who it is for

A security engineer on a commerce or payments platform working application security, product security, or platform security. Reviewing PRs that touch checkout, payments, the storefront or admin API, the app-platform, OAuth scopes, webhooks, fraud signals, merchant data, or partner integrations. Expected to write threat models, sign off on launches, partner with PCI and SOC 2 audit teams, and leave behind documentation that survives a team handover.

Who this is NOT for. Not for security managers who do not write threat models themselves. Not for compliance analysts whose work is control-evidence collection without code review. Not for general application-security engineers on a SaaS product with no payments or merchant-funds surface. The course is specifically for engineers reviewing code on a commerce or payments platform.

How it arrives

Text-based course in the Art of Service learning environment, plus downloadable templates and worked examples for every module, plus the hand-built implementation playbook delivered alongside course access.

Time investment. Three to four hours per module if read end to end with the templates worked through. Roughly forty hours total across three weeks for the full course and the playbook. Modules stand alone so they can be picked up against a specific PR in your review queue.

Why $199 is the right number

Generic application-security and threat-modelling courses cover STRIDE, DREAD, and PASTA but stop at the framework. They do not cover the commerce-platform surfaces (checkout, wallet picker, app-platform, OAuth scopes, webhooks) and they do not map findings to PCI DSS 4.0 or SOC 2 CC controls. PCI training covers the requirements but not how to do the review work that produces the evidence. This course covers the gap between the two.

FAQ

I already write threat models. What is new here?

The modules are about running the review, not just writing the model. The artefacts that come out (PR review, Slack canvas, control mappings) are the deliverables Staff engineers and audit teams pick up. Most threat-modelling material stops at the diagram.

Is this fitted to a specific commerce platform?

The course is written for the general commerce-platform security-engineer role. The hand-built implementation playbook delivered alongside course access is fitted to your specific surfaces (checkout, wallet picker, app-platform, OAuth scopes, webhook pipeline) so the templates and mappings drop straight into your review workflow.

How does this map to PCI DSS 4.0 and SOC 2?

Modules 7 and 8 cover the mapping in detail. The cheatsheets included translate review findings into PCI DSS 4.0 requirements (6.4, 8, 11, 12 mainly) and SOC 2 Common Criteria so the PCI lead, the QSA, and the SOC 2 audit team can use the review trail as evidence.

What if my role is more product-security than payments-focused?

The app-platform, storefront-API, admin-API, and webhook modules (5 and 6) cover the product-security surface in depth. The payments-specific modules give you the vocabulary to partner with the payments team on cross-cutting reviews.

30-day money-back guarantee. If after a week of working through the materials this is not what you needed, reply to the receipt email and a full refund is processed. No questions, no forms.

Within 24 hours your account in the learning environment is provisioned and the tailored implementation playbook is delivered alongside it.