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- Introduced a new document outlining the inline DSSE provenance for SBOM, VEX, scan, and derived events. - Defined the Mongo schema for event patches, including key fields for provenance and trust verification. - Documented the write path for ingesting provenance metadata and backfilling historical events. - Created CI/CD snippets for uploading DSSE attestations and generating provenance metadata. - Established Mongo indexes for efficient provenance queries and provided query recipes for various use cases. - Outlined policy gates for managing VEX decisions based on provenance verification. - Included UI nudges for displaying provenance information and implementation tasks for future enhancements. --- Implement reachability lattice and scoring model - Developed a comprehensive document detailing the reachability lattice and scoring model. - Defined core types for reachability states, evidence, and mitigations with corresponding C# models. - Established a scoring policy with base score contributions from various evidence classes. - Mapped reachability states to VEX gates and provided a clear overview of evidence sources. - Documented the event graph schema for persisting reachability data in MongoDB. - Outlined the integration of runtime probes for evidence collection and defined a roadmap for future tasks. --- Introduce uncertainty states and entropy scoring - Created a draft document for tracking uncertainty states and their impact on risk scoring. - Defined core uncertainty states with associated entropy values and evidence requirements. - Established a schema for storing uncertainty states alongside findings. - Documented the risk score calculation incorporating uncertainty and its effect on final risk assessments. - Provided policy guidelines for handling uncertainty in decision-making processes. - Outlined UI guidelines for displaying uncertainty information and suggested remediation actions. --- Add Ruby package inventory management - Implemented Ruby package inventory management with corresponding data models and storage mechanisms. - Created C# records for Ruby package inventory, artifacts, provenance, and runtime details. - Developed a repository for managing Ruby package inventory documents in MongoDB. - Implemented a service for storing and retrieving Ruby package inventories. - Added unit tests for the Ruby package inventory store to ensure functionality and data integrity.
StellaOps Policy Engine
Policy Engine compiles and evaluates Stella DSL policies deterministically, producing explainable findings with full provenance.
Responsibilities
- Compile
stella-dsl@1packs into executable graphs. - Join advisories, VEX evidence, and SBOM inventories to derive effective findings.
- Expose simulation and diff APIs for UI/CLI workflows.
- Emit change-stream driven events for Notify/Scheduler integrations.
Key components
StellaOps.Policy.Engineservice host.- Shared libraries under
StellaOps.Policy.*for evaluation, storage, DSL tooling.
Integrations & dependencies
- MongoDB findings collections, RustFS explain bundles.
- Scheduler for incremental re-evaluation triggers.
- CLI/UI for policy authoring and runs.
Operational notes
- DSL grammar and lifecycle docs in ../../policy/.
- Observability guidance in ../../observability/policy.md.
- Governance and scope mapping in ../../security/policy-governance.md.
- Readiness briefs: ../policy/secret-leak-detection-readiness.md, ../policy/windows-package-readiness.md.
- Readiness briefs: ../scanner/design/macos-analyzer.md, ../scanner/design/windows-analyzer.md, ../policy/secret-leak-detection-readiness.md, ../policy/windows-package-readiness.md.
- Ruby capability predicates design: ./design/ruby-capability-predicates.md.
Backlog references
- DOCS-POLICY-20-001 … DOCS-POLICY-20-012 (completed baseline).
- DOCS-POLICY-23-007 (upcoming command updates).
Epic alignment
- Epic 2 – Policy Engine & Editor: deliver deterministic evaluation, DSL infrastructure, explain traces, and incremental runs.
- Epic 4 – Policy Studio: integrate registry workflows, simulation at scale, approvals, and promotion semantics.