> For the complete documentation index, see [llms.txt](https://ai-os-and-trend-finder.gitbook.io/ai-os-and-trend-finder-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://ai-os-and-trend-finder.gitbook.io/ai-os-and-trend-finder-docs/.spec_system/archive/sessions/phase28-session05-signal-aging-half-lives-and-saturation-refinement/security-compliance.md).

# Security & Compliance Report

**Session ID**: `phase28-session05-signal-aging-half-lives-and-saturation-refinement` **Reviewed**: 2026-06-14 **Result**: PASS

***

## Scope

**Files reviewed** (session deliverables and validation-time fixes):

* `scripts/lib/ai-runtime/signal-aging.ts` - Pure signal-aging derivation helper.
* `scripts/lib/ai-runtime/__tests__/signal-aging.test.ts` - Signal-aging unit coverage.
* `scripts/extensions/trend-finder/sources/types.ts` - Source role half-life contracts.
* `scripts/extensions/trend-finder/sources/apify-source-config.ts` - Apify source metadata parsing and validation.
* `scripts/extensions/trend-finder/sources/__tests__/apify-source-config.test.ts` - Source-config half-life coverage.
* `scripts/extensions/trend-finder/sources/apify-adapter.ts` - Source summary half-life projection.
* `scripts/lib/ai-runtime/scoring.ts` - Weighted recency, signal aging, and saturation refinement.
* `scripts/lib/ai-runtime/__tests__/scoring.test.ts` - Scoring integration coverage.
* `scripts/lib/ai-runtime/__tests__/scoring-calibration.test.ts` - Scoring-version calibration coverage.
* `src/extensions/trend-finder/schema.ts` - Browser payload schema additions.
* `src/extensions/trend-finder/view-model.ts` - Signal-aging view-model projection.
* `src/extensions/trend-finder/components/trend-card.tsx` - Trend card aging and saturation chips.
* `src/extensions/trend-finder/signal-workbench-model.ts` - Workbench aging fields, filters, facets, and sort keys.
* `src/extensions/trend-finder/components/signal-workbench-controls.tsx` - Workbench aging filter control.
* `src/extensions/trend-finder/components/signal-workbench-table.tsx` - Visible Workbench Age chip and sortable column.
* `src/extensions/trend-finder/fixtures.ts` - Representative signal-aging fixtures.
* `src/extensions/trend-finder/__tests__/view-model.test.ts` - Schema and view-model aging coverage.
* `src/extensions/trend-finder/__tests__/signal-workbench-model.test.ts` - Workbench model aging coverage.
* `src/extensions/trend-finder/components/__tests__/trend-card.test.tsx` - Trend card chip coverage.
* `src/extensions/trend-finder/components/__tests__/trend-sparkline.test.tsx` - Workbench table coverage.
* `docs/extensions/trend-finder-scoring.md` - Half-life aging and saturation documentation.

**Review method**: Static diff review, targeted dangerous-pattern scan, dependency/schema boundary check, full test suite, typechecks, whitespace check, ASCII/LF check, and local browser smoke of the Workbench surface.

***

## Security Assessment

### Overall: PASS

| Category                      | Status | Severity | Details                                                                                                                                                                                                    |
| ----------------------------- | ------ | -------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| Injection (SQLi, CMDi, LDAPi) | PASS   | --       | No SQL, shell execution, dynamic code evaluation, or raw HTML injection was added.                                                                                                                         |
| Hardcoded Secrets             | PASS   | --       | No live credentials were added. Existing placeholder token strings remain test/fixture redaction inputs only.                                                                                              |
| Sensitive Data Exposure       | PASS   | --       | Browser payload additions are bounded enums, numbers, labels, warning codes, and source-role contributions. No raw evidence dumps, prompts, private paths, or source payloads are exposed by the new code. |
| Insecure Dependencies         | PASS   | --       | No `package.json` or lockfile dependency changes in this session.                                                                                                                                          |
| Security Misconfiguration     | PASS   | --       | No CORS, headers, auth, debug, deployment, or runtime security configuration changes.                                                                                                                      |

### Findings

No security findings.

***

## GDPR Compliance Assessment

### Overall: N/A

*N/A because this session introduced deterministic scoring/display metadata only. It did not add collection, storage, logging, or transfer of personal data.*

| Category                   | Status | Details                                                                          |
| -------------------------- | ------ | -------------------------------------------------------------------------------- |
| Data Collection & Purpose  | N/A    | No new personal data collection.                                                 |
| Consent Mechanism          | N/A    | No new consent-dependent data path.                                              |
| Data Minimization          | PASS   | Added payload fields are bounded derived values over existing evidence metadata. |
| Right to Erasure           | N/A    | No new persisted personal data store.                                            |
| PII in Logs                | PASS   | No new logging of personal data or raw evidence.                                 |
| Third-Party Data Transfers | N/A    | No new external calls or third-party transfers.                                  |

### Personal Data Inventory

No personal data collected or processed in this session.

### Findings

No GDPR findings.

***

## Recommendations

None - session is compliant.

***

## Sign-Off

* **Result**: PASS
* **Reviewed by**: AI validation (validate)
* **Date**: 2026-06-14


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

```
GET https://ai-os-and-trend-finder.gitbook.io/ai-os-and-trend-finder-docs/.spec_system/archive/sessions/phase28-session05-signal-aging-half-lives-and-saturation-refinement/security-compliance.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.
