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Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
2026-04-06 08:53:50 +03:00

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Findings Ledger

Immutable, append-only event ledger for tracking vulnerability findings, policy decisions, and workflow state changes across the StellaOps platform.

Purpose

  • Audit trail: Every finding state change (open, triage, suppress, resolve) is recorded with cryptographic hashes and actor metadata.
  • Deterministic replay: Events can be replayed to reconstruct finding states at any point in time.
  • Merkle anchoring: Event chains are Merkle-linked for tamper-evident verification.
  • Tenant isolation: All events are partitioned by tenant with cross-tenant access forbidden.

Consolidated modules (Sprint 207)

The src/Findings/ directory is the unified home for all findings-related services:

  • Findings Ledger (StellaOps.Findings.Ledger, StellaOps.Findings.Ledger.WebService): Core append-only event ledger.
  • RiskEngine (StellaOps.RiskEngine.Core, StellaOps.RiskEngine.WebService, StellaOps.RiskEngine.Worker): Computes risk scores using CVSS, EPSS, KEV, exploit maturity, fix-chain attestation, and VEX gates. Infrastructure lives under __Libraries/StellaOps.RiskEngine.Infrastructure.
  • VulnExplorer (StellaOps.VulnExplorer.Api): API surface for browsing findings, evidence subgraphs, triage workflows, and VEX decision management. Shared contracts from StellaOps.VulnExplorer.WebService.

Previously archived docs for RiskEngine and VulnExplorer are in docs-archived/modules/risk-engine/ and docs-archived/modules/vuln-explorer/.

  • FL1FL10 remediation tracker: gaps-FL1-FL10.md
  • Implementation plan: implementation_plan.md
  • Schema catalog (events/projections/exports): schema-catalog.md
  • Merkle & external anchor policy: merkle-anchor-policy.md
  • Tenant isolation & redaction manifest: tenant-isolation-redaction.md

Compatibility read-model surfaces

  • GET /api/v2/security/vulnerabilities/{identifier} is the authoritative shipped vulnerability-detail route for the Web console.
  • The route is backed by Findings Ledger projections plus optional scoring state. Unknown fields remain null or absent instead of being fabricated in the API or the web client.
  • signedScore is emitted only when cached or historical scoring state exists for the resolved finding.
  • proofSubjectId is surfaced only when the projection carries replay/proof identity, allowing the Web console to enable verification only when a real proof subject exists.

Implementation Status

Delivery Phases

  • Phase 1 Observability baselines: Instrument writer/projector with metrics, structured logs, OTLP exporters, Grafana dashboards + alert rules
  • Phase 2 Determinism harness: Finalize NDJSON fixtures for ≥5M findings/tenant, implement replay harness CLI, add CI pipeline jobs
  • Phase 3 Deployment & backup collateral: Integrate ledger service into Compose/Helm, automate PostgreSQL migrations, document backup cadence
  • Phase 4 Provenance & air-gap extensions: Ingest orchestrator run export metadata, extend ledger events for bundle provenance, store attestation pointers

Key Dependencies

  • AdvisoryAI Sprint 110.A completion (raw findings parity)
  • Observability schema approval to unblock Phase 1 instrumentation
  • QA lab capacity for 5M replay checkpoint
  • DevOps review of Compose/Helm overlays
  • Orchestrator export schema freeze for provenance linkage

Acceptance Criteria

  • Metrics/logging/tracing implementation merged with dashboards exported
  • Harness CLI + fixtures + signed reports committed
  • Compose/Helm overlays + backup/restore runbooks validated
  • Air-gap provenance fields documented + implemented
  • Sprint tracker and release notes updated after each phase