# Security Review
Run security-focused PR reviews and full-codebase audits with Droid using STRIDE, OWASP, and supply-chain methodology.
Droid security review is a dedicated security workflow for finding high-confidence vulnerabilities in pull requests or across an entire repository. It can run locally from the CLI or automatically in GitHub Actions.
Review only the pull request diff, trace changed data flows, and post inline security findings with severity and suggested fixes.
Audit every source file in the repository, group files for parallel review, and produce a structured report of validated findings.
## Run a full-codebase audit
For the most thorough security results, run the audit inside a [Mission](/missions/overview). Missions plan the audit upfront, fan out work across orchestrated agents, and validate findings at each milestone, which produces dramatically deeper coverage than a single-session run.
From any Droid session, enter a mission and kick off the security review:
```text
/missions
/security-review deep audit
```
### Periodic scan in CI
Run the same mission-based audit on a schedule by invoking `droid exec --mission` from a workflow. The audit writes its full output under `~/security-audits/-/` on the runner, so add an `actions/upload-artifact` step to preserve findings after the runner exits:
```yaml
on:
schedule:
- cron: '0 6 * * 1'
jobs:
audit:
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v4
- name: Install Droid CLI
run: |
curl -fsSL https://app.factory.ai/cli | sh
echo "$HOME/.local/bin" >> "$GITHUB_PATH"
- name: Run deep security review
env:
FACTORY_API_KEY: ${{ secrets.FACTORY_API_KEY }}
run: |
droid exec --mission --auto high -m claude-opus-4-7 \
"/security-review across the entire repository"
- name: Upload security review output
if: always()
uses: actions/upload-artifact@v4
with:
name: deep-security-review-${{ github.run_id }}
path: ~/security-audits/
if-no-files-found: warn
retention-days: 90
```
## Run locally on a diff
To review the current diff in your working tree or branch from the CLI, run the built-in skill in any Droid session:
```text
/security-review local diff
```
When invoked on a diff, Droid traces changed data flows across authentication, authorization, validation, database, network, filesystem, and LLM boundaries, and reports validated findings inline with severity and suggested fixes.
## Run in GitHub CI on pull requests
With [Droid Action](https://github.com/Factory-AI/droid-action), comment on a pull request to trigger an on-demand security review:
```text
@droid security
```
To run security review automatically on every non-draft PR, add `automatic_security_review: true` to your review workflow:
```yaml
- name: Run Droid Auto Review
uses: Factory-AI/droid-action@main
with:
factory_api_key: ${{ secrets.FACTORY_API_KEY }}
automatic_review: true
automatic_security_review: true
```
When `automatic_review` and `automatic_security_review` are both enabled, Droid runs the security pass alongside the standard code review and includes the security summary in the PR feedback.
## Configuration
These are the Droid Action security inputs currently wired for the workflows documented on this page:
| Input | Default | Description |
| --- | --- | --- |
| `automatic_security_review` | `false` | Run security review automatically on PRs without requiring `@droid security`. |
| `security_model` | `""` | Override the model used for security review candidate generation and full-repository scans. Falls back to `review_model` if unset. |
## Methodology
Security review uses the built-in `security-review` skill. In PR automation, Droid Action runs a dedicated `security-reviewer` subagent that loads this methodology before reading files, then traces changed data flows across authentication, authorization, validation, database, network, filesystem, and LLM boundaries.
The methodology applies multiple security frameworks together:
{/* sweep-allow: term-bullets */}
- **STRIDE threat modeling**: Spoofing, Tampering, Repudiation, Information Disclosure, Denial of Service, and Elevation of Privilege.
- **OWASP Top 10:2021**: Broken access control, cryptographic failures, injection, insecure design, misconfiguration, vulnerable components, authentication failures, integrity failures, logging failures, and SSRF.
- **OWASP Top 10 for LLM Applications:2025**: prompt injection, sensitive information disclosure, insecure LLM output handling, excessive agency, vector/embedding weaknesses, and other AI-specific risks when the codebase uses LLMs.
- **Supply-chain analysis**: dependency manifest and lockfile review, including typosquatting signals, install scripts, overly broad version ranges, and newly published packages.
- **Repository threat-model context**: if `.factory/threat-model.md` exists, Droid uses it as the attack-surface map.
### Review pipeline
Security review uses a two-pass workflow:
1. **Candidate generation**: Droid reads the diff or codebase, identifies security-relevant areas, traces untrusted input across trust boundaries, and produces candidate vulnerabilities.
2. **Validation**: Droid re-checks each candidate for reachability, exploitability, existing controls, and false positives before reporting it.
Findings are reported only when there is a realistic exploit path, such as an injection vulnerability, missing authentication or authorization on a sensitive operation, hardcoded secret, data exposure, unsafe LLM output handling, or risky supply-chain change.
### Severity levels
| Severity | Priority | Examples |
| --- | --- | --- |
| Critical | `P0` | RCE, hardcoded production secret, auth bypass, unauthenticated admin endpoint |
| High | `P1` | SQL injection behind auth, stored XSS, sensitive-data IDOR, very new dependency |
| Medium | `P2` | CSRF on state-changing operations, information disclosure, prompt injection behind auth |
| Low | `P3` | Minor security hardening with a concrete but low-impact exploit path |
Plan and orchestrate large multi-step work, including thorough audits.
How to invoke and customize skills.
Security architecture and controls for the GitHub Action integration.
Pair security review with day-to-day correctness and quality checks.