# Application security: build a repeatable assurance loop

Original SecNet workpaper · 1.0 · 11 October 2026

Complete placeholders for your assessment. The example below is fictional; it is not an executed test or a legal decision.

## Assessment identity

- Record ID: [___]
- Objective and decision question: [___]
- Scope / exclusions: [___]
- Criteria and version: [___]
- Authorization and limits: [___]
- Owner / independent reviewer: [___]
- Period / artifact digest: [___]
- Evidence access / retention: [___]

## Planned procedure

1. Inventory applications, APIs, data classes and business-critical operations. Agree assurance depth by impact, including service identities and administrative paths.
2. Draw data flows and trust boundaries with product and engineering teams. Turn misuse cases into explicit requirements: who may read, change, export or delete each object?
3. Place lightweight code, dependency and secret checks in pull requests. Assign alert ownership and expiry for justified exceptions; avoid blocking releases on untriaged duplicates.
4. Exercise authenticated roles and API contracts in staging. Test object authorization, logout/revocation, file handling and sensitive business transitions beyond crawler coverage.
5. Set a release decision with confirmed impact, residual risk, accountable acceptance and rollback readiness. Link the assessment to an immutable source/build identity.
6. Monitor abuse signals and dependency changes after release. Feed incidents and escaped defects back into requirements and regression tests rather than repeating a one-off scan.

## Evidence and decision register

| ID | Criterion | Observation | Redacted evidence / origin / time | Conclusion and limitation | Owner / date | Recheck |
|---|---|---|---|---|---|---|
| [___] | [___] | [___] | [___] | [___] | [___] | [___] |

## Topic-specific deliverables

- [ ] Threat model and versioned requirements-to-evidence matrix.
- [ ] Confirmed defect backlog with code owner, affected build and regression test.
- [ ] Release assurance note with residual risks, exceptions and post-release signals.

## Worked fictional decision example

Fictional feature: a document export endpoint is protected by a hidden UI button but lacks object authorization. The AppSec loop adds an ownership rule to the design, validates it at the service boundary, and tests two roles with synthetic documents. The release record links the fixed source SHA and the negative test; the team monitors denied export attempts without logging document contents.

## Closure check

- [ ] Controls connected to an actual threat and owner?
- [ ] Authenticated and negative tests included?
- [ ] Exceptions have a review date and accountable acceptance?

## Official references · checked: 2026-10-11

- [OWASP ASVS 5.0.0](https://owasp.org/projects/asvs)
- [OWASP WSTG](https://owasp.org/projects/web-security-testing-guide)
- [Semgrep documentation](https://docs.semgrep.dev/)
- [Trivy documentation](https://trivy.dev/latest/docs/)
- [ZAP documentation](https://www.zaproxy.org/docs/)