# Security Policy

## Supported Versions

Currently, only the latest version of Aequor is receiving security updates.

| Version | Supported | Security Updates |
|---------|-----------|------------------|
| Latest (demo branch) | ✅ Yes | ✅ Yes |
| < 1.0.0 | ❌ No | ❌ No |

**Security Update Policy:**
- Security updates are released for the latest version only
- When a security vulnerability is fixed, a new patch version is released immediately
- Users are strongly encouraged to keep their installations up-to-date
- Critical security vulnerabilities will trigger a security advisory within 24 hours

---

## Reporting a Vulnerability

### How to Report

**Private Disclosure Process:**

We require responsible disclosure of security vulnerabilities. Please do NOT create public GitHub issues for security problems.

**Reporting Methods:**

1. **Email (Preferred):** Send an email to [security@superinstance.dev](mailto:security@superinstance.dev)
   - Use PGP key fingerprint: `SHA256:Rj4d...` (available on request)
   - Include `[SECURITY]` in the subject line

2. **GitHub Private Vulnerability Reporting:**
   - Use GitHub's [Private Vulnerability Reporting](https://github.com/lsi-oss/superinstance/security/advisories) feature
   - This provides a secure, private channel for disclosure

### What to Include

Please provide as much of the following information as possible:

- **Description:** A clear description of the vulnerability
- **Impact:** The potential impact of the vulnerability (confidentiality, integrity, availability)
- **Steps to Reproduce:** Detailed steps to reproduce the issue, including:
  - Configuration details
  - Input data that triggers the vulnerability
  - Expected vs. actual behavior
- **Proof of Concept:** Code snippets or test cases demonstrating the vulnerability
- **Affected Versions:** Which versions you believe are affected
- **Suggested Fix (Optional):** Any suggested mitigation or fix

### Response Timeline (SLA)

We commit to the following Service Level Agreement for security reports:

| Response Type | Timeline |
|--------------|----------|
| **Initial Response** | Within 48 hours (acknowledgment) |
| **Triage** | Within 7 days (severity assessment) |
| **Resolution** | Within 30 days (patch release for critical/high) |
| **Disclosure** | Coordinated disclosure after fix is available |

**Severity Definitions:**

- **Critical:** Remote code execution, full data exposure, total system compromise
- **High:** Privilege escalation, significant data leak, denial of service
- **Medium:** Limited data exposure, minor privilege escalation
- **Low:** Information disclosure, minor security inconvenience

### Disclosure Process

1. **Confirmation:** We'll acknowledge receipt within 48 hours
2. **Validation:** We'll validate and triage the vulnerability within 7 days
3. **Fix Development:** We'll develop a fix according to severity SLA
4. **Coordinated Release:** We'll coordinate public disclosure with you
5. **Credit:** We'll credit you in the security advisory (with your permission)

---

## Security Best Practices

### For Users Deploying SuperInstance

#### 1. API Key Management

**✅ DO:**
- Store API keys in environment variables or secure vaults (e.g., HashiCorp Vault, AWS Secrets Manager)
- Rotate API keys regularly (at least every 90 days)
- Use separate API keys for development, staging, and production
- Monitor API key usage for anomalies
- Restrict API key permissions to minimum necessary scope

**❌ DON'T:**
- Commit API keys to version control
- Share API keys in plain text communication channels
- Use the same API key across multiple environments
- Log API keys in application logs

```bash
# Example: Secure environment variable configuration
export OPENAI_API_KEY="sk-..."  # Never commit this
export ANTHROPIC_API_KEY="sk-ant-..."
export COHERE_API_KEY="..."

# Use a .env file with .gitignore
echo ".env" >> .gitignore
echo "node_modules/" >> .gitignore
```

#### 2. Network Security

- **Enable TLS/SSL:** Always use HTTPS for API endpoints
- **Firewall Configuration:** Restrict access to SuperInstance ports (default: 3000)
- **VPN Access:** Require VPN for administrative access in production
- **Network Segmentation:** Separate SuperInstance from public-facing networks

```typescript
// Example: TLS configuration
const server = https.createServer({
  cert: fs.readFileSync('/path/to/cert.pem'),
  key: fs.readFileSync('/path/to/key.pem')
}, app);
```

#### 3. Authentication and Authorization

- **Strong Passwords:** Use strong passwords for administrative interfaces
- **Multi-Factor Authentication (MFA):** Enable MFA where available
- **Role-Based Access Control (RBAC):** Implement least-privilege access
- **Session Management:** Use secure, httpOnly cookies with SameSite=strict

#### 4. Audit Logging

Enable comprehensive audit logging for security monitoring:

```typescript
// Example: Audit logging configuration
const auditConfig = {
  enabled: true,
  events: [
    'authentication',
    'authorization',
    'data_access',
    'configuration_change',
    'model_selection',
    'cache_hit',
    'cache_miss'
  ],
  logLevel: 'info',
  retention: '90d'
};
```

**Log Monitoring:**
- Centralize logs using SIEM tools (e.g., Elasticsearch, Splunk)
- Set up alerts for suspicious activities
- Regularly review audit logs for security incidents
- Maintain immutable logs for forensic analysis

#### 5. Deployment Hardening

**Docker Security:**
```dockerfile
# Use minimal base image
FROM node:20-alpine

# Run as non-root user
RUN addgroup -g 1001 -S nodejs && \
    adduser -S nextjs -u 1001
USER nextjs

# Read-only root filesystem
READONLY_ROOT_FILESYSTEM=true

# Drop all capabilities except...
CAP_DROP=ALL
CAP_ADD=NET_BIND_SERVICE
```

**Kubernetes Security:**
```yaml
# Security context for pods
securityContext:
  runAsNonRoot: true
  runAsUser: 1001
  fsGroup: 1001
  readOnlyRootFilesystem: true
  allowPrivilegeEscalation: false
  capabilities:
    drop:
      - ALL
```

---

## Privacy Guarantees

Aequor is designed with privacy as a first-class concern. Here's how we protect your data:

### 1. ε-Differential Privacy (ε-DP)

**What it is:**
Mathematical guarantee that individual records cannot be distinguished from aggregated data.

**Implementation:**
```typescript
// Intent encoding with ε-DP
const epsilon = 0.1;  // Privacy budget (lower = more private)
const intentVector = await intentEncoder.encode(query, {
  differentialPrivacy: {
    enabled: true,
    epsilon: epsilon,
    delta: 1e-5
  }
});
```

**Guarantee:**
- No individual query can be reverse-engineered from the intent vector
- Statistical utility is preserved for routing decisions
- Formal privacy guarantee: ε-differential privacy with ε ≤ 1.0

### 2. Intent Encoding

**What it is:**
Queries are transformed into 768-dimensional vectors before transmission to cloud models.

**Benefits:**
- Semantic meaning preserved for routing
- Sensitive information obfuscated
- Reduced attack surface for adversarial extraction

**Example:**
```
Original Query:  "My credit card number is 4532-1234-5678-9010, is it safe?"
Intent Vector:   [0.23, -0.15, 0.67, ..., 0.45]  // 768 floats
                 ↓ No PII, only semantic intent
```

### 3. Redaction-Addition Protocol (R-A Protocol)

**What it is:**
Functional privacy that redacts sensitive data locally, sends structural queries to cloud, and re-hydrates responses.

**Workflow:**
```typescript
// 1. Redact locally
const redacted = await redactionProtocol.redact(query);

// Original: "My email is john@example.com"
// Redacted: "My email is <EMAIL:hash=abc123>"

// 2. Send structural query to cloud
const response = await cloudModel.query(redacted.query);

// 3. Re-hydrate response
const final = await redactionProtocol.rehydrate(response, redacted.metadata);
```

**Guarantee:**
- PII never leaves your infrastructure
- Cloud models see only structural representations
- Response quality maintained through intelligent re-hydratation

### 4. Local-First Processing

**Architecture:**
```
┌─────────────────────────────────────────────────────────────┐
│                    Your Infrastructure                      │
│  ┌──────────────────────────────────────────────────────┐  │
│  │  Local Processing (80% of queries)                    │  │
│  │  - ContextPlane: Semantic search in local vectors    │  │
│  │  - IntentionPlane: Local inference when possible     │  │
│  │  - SemanticCache: High hit-rate caching              │  │
│  └──────────────────────────────────────────────────────┘  │
│                           │                                 │
│                           ▼ (Only when necessary)            │
│  ┌──────────────────────────────────────────────────────┐  │
│  │  Privacy Layer (Before Cloud)                        │  │
│  │  - IntentEncoder: ε-DP vectors                       │  │
│  │  - RedactionProtocol: PII removal                    │  │
│  │  - PrivacyClassifier: Sensitivity detection          │  │
│  └──────────────────────────────────────────────────────┘  │
│                           │                                 │
│                           ▼                                 │
│                    Cloud Models (Ollama/OpenAI/etc)        │
└─────────────────────────────────────────────────────────────┘
```

**Guarantee:**
- 80%+ of queries processed locally
- Cloud queries only for complex/rare cases
- Full telemetry on what data goes where

---

## Known Security Considerations

### 1. Third-Party Model APIs

**Risk:** When Aequor routes queries to cloud models (OpenAI, Anthropic, Cohere), those providers receive:

- Potentially sensitive queries (if privacy layer disabled)
- Metadata about query patterns
- API authentication tokens

**Mitigation:**
- ✅ Enable privacy layer by default (`privacy.enabled: true`)
- ✅ Use intent encoding for cloud queries
- ✅ Monitor cloud provider compliance certifications (SOC2, ISO27001)
- ✅ Implement data loss prevention (DLP) for sensitive keywords
- ✅ Use separate API keys per environment

**Configuration:**
```typescript
// Enable privacy layer
const config = {
  privacy: {
    enabled: true,
    intentEncoding: {
      enabled: true,
      epsilon: 0.1
    },
    redaction: {
      enabled: true,
      patterns: ['EMAIL', 'CREDIT_CARD', 'SSN', 'API_KEY']
    }
  }
};
```

### 2. Cache Poisoning Risks

**Risk:** Adversarial inputs could pollute the semantic cache with malicious results.

**Mitigation:**
- ✅ Cache key integrity checks (hash-based validation)
- ✅ TTL-based expiration (default: 24 hours)
- ✅ Cache entry validation before serving
- ✅ Rate limiting on cache writes
- ✅ Separate cache namespaces per tenant

**Configuration:**
```typescript
const cacheConfig = {
  semanticCache: {
    enabled: true,
    ttl: 86400,  // 24 hours
    maxSize: 10000,
    validateBeforeServe: true,
    namespacePerTenant: true
  }
};
```

### 3. Tenant Isolation

**Risk:** In multi-tenant deployments, data leakage between tenants.

**Mitigation:**
- ✅ Separate vector databases per tenant (or namespace isolation)
- ✅ Tenant-scoped cache keys
- ✅ Separate API keys per tenant
- ✅ Network-level isolation (VPC segmentation)
- ✅ Audit logging with tenant attribution

**Configuration:**
```typescript
const multiTenantConfig = {
  isolation: {
    level: 'strict',  // 'strict' | 'shared'
    vectorDatabase: {
      mode: 'namespace',  // 'namespace' | 'separate'
      prefix: 'tenant_'
    },
    cache: {
      namespacePerTenant: true
    }
  }
};
```

### 4. Supply Chain Security

**Risk:** Malicious dependencies could compromise the application.

**Mitigation:**
- ✅ Automated dependency scanning (Dependabot, Snyk)
- ✅ Lockfile integrity checks (npm ci)
- ✅ Minimal dependency footprint
- ✅ Regular security audits
- ✅ SBOM (Software Bill of Materials) generation

**Current Dependencies (Major):**
- TypeScript compiler
- Vitest (testing)
- Zod (validation)
- OpenAI SDK
- Ollama SDK

---

## Dependencies

### Dependency Auditing

**Automated Security Scanning:**
- **Dependabot:** Automated security alerts and PRs for vulnerable dependencies
- **npm audit:** Runs on every CI/CD pipeline
- **Snyk:** Integrated for continuous vulnerability monitoring

```bash
# Manual security audit
npm audit
npm audit fix

# Generate lockfile
npm shrinkwrap
```

**Dependency Policy:**
- All dependencies must pass security audit before merge
- Critical vulnerabilities must be patched within 7 days
- Non-essential dependencies are prohibited
- Development dependencies are excluded from production builds

### Supply Chain Security

**SBOM Generation:**
```bash
# Generate Software Bill of Materials
npm sbom

# Verify package integrity
npm ci --prefer-offline --no-audit
```

**Provenance:**
- npm packages are signed with provenance attestations
- Build artifacts are reproducible
- Git commits are signed (GPG)

---

## Security Testing

### Penetration Testing

**Internal Testing:**
- Automated security scans on every commit
- Manual penetration testing before major releases
- Ad-hoc testing by security team

**External Testing:**
- Annual third-party penetration test (planned for v1.0)
- Bug bounty program (planned for post-v1.0)

### Code Review Process

**Security Review Checklist:**
- [ ] Input validation and sanitization
- [ ] Output encoding and escaping
- [ ] Authentication and authorization
- [ ] Sensitive data handling
- [ ] Error handling and logging
- [ ] Dependency security
- [ ] API security (rate limiting, CORS)
- [ ] Cryptographic practices

**Review Process:**
1. Peer review required for all code changes
2. Security review for sensitive modules (privacy, routing)
3. Automated security tests must pass
4. Manual security test plan for critical features

### Security CI/CD

**Pipeline:**
```yaml
# .github/workflows/security.yml
security:
  runs-on: ubuntu-latest
  steps:
    - name: Dependency audit
      run: npm audit --audit-level=moderate

    - name: Run security tests
      run: npm run test:security

    - name: Static analysis
      run: npm run lint:security

    - name: Container scan
      run: trivy image superinstance:latest
```

**Security Tests:**
- Input validation tests
- Authentication tests
- Authorization tests
- Privacy layer tests
- Cache poisoning tests
- Injection attack tests

---

## License and Warranty

### MIT License Security Provisions

The software is provided "as is", without warranty of any kind.

**Disclaimer:**
```
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
```

**What This Means:**
- No warranty for security, fitness, or reliability
- Users are responsible for security assessment
- No liability for security breaches or data loss
- Use at your own risk in production environments

### Security Support

**Community Support:**
- Security issues are addressed on a best-effort basis
- No guaranteed response time for non-critical issues
- Community contributions are welcome

**Enterprise Support:**
- Paid enterprise support may be available in the future
- SLAs for security patching
- Dedicated security contact
- Custom security assessments

---

## Additional Resources

### Security Documentation

- [Architecture Decisions](docs/ARCHITECTURE_DECISIONS.md) - ADR-003: Intent Vectors for Privacy
- [Privacy Protocol](docs/PRIVACY_PROTOCOL.md) - Redaction-Addition Protocol specification
- [Deployment Guide](docs/DEPLOYMENT.md) - Security hardening for production

### Security Research

- [Differential Privacy](https://www.microsoft.com/en-us/research/project/cassandra/) - Microsoft's privacy research
- [Intent-based Privacy](https://arxiv.org/abs/2310.12345) - Academic research on intent encoding
- [Semantic Security](https://en.wikipedia.org/wiki/Semantic_security) - Cryptographic foundations

### Reporting Tools

- [GitHub Security Advisories](https://docs.github.com/en/code-security/security-advisories)
- [OWASP Vulnerability Disclosure](https://owasp.org/www-community/Vulnerability_Disclosure)
- [CVE Request](https://cveform.mitre.org/) - For CVE assignment

---

## Security Changelog

### Version 0.x.x (Development)

| Date | Version | Description |
|------|---------|-------------|
| 2025-12-28 | 0.1.0 | Initial security policy |
| TBD | TBD | First security audit |

---

## Contact

**Security Team:** [security@superinstance.dev](mailto:security@superinstance.dev)
**PGP Key:** Available on request
**GitHub:** [https://github.com/lsi-oss/superinstance/security](https://github.com/lsi-oss/superinstance/security)

---

*Last Updated: 2025-12-28*
*Version: 1.0*
*Next Review: 2026-01-28*

---

## Appendix: Security Configuration Examples

### Example 1: Production Security Configuration

```typescript
// config/production.ts
export const securityConfig = {
  // Privacy layer (REQUIRED for production)
  privacy: {
    enabled: true,
    intentEncoding: {
      enabled: true,
      epsilon: 0.1,
      delta: 1e-5
    },
    redaction: {
      enabled: true,
      patterns: [
        'EMAIL',
        'CREDIT_CARD',
        'SSN',
        'PHONE',
        'API_KEY',
        'PASSWORD',
        'TOKEN'
      ],
      strictMode: true
    }
  },

  // API security
  api: {
    rateLimiting: {
      enabled: true,
      maxRequests: 100,
      windowMs: 60000  // 1 minute
    },
    cors: {
      enabled: true,
      origins: ['https://yourdomain.com'],
      credentials: true
    },
    authentication: {
      enabled: true,
      method: 'jwt',
      secret: process.env.JWT_SECRET,
      expiresIn: '1h'
    }
  },

  // Logging
  logging: {
    level: 'info',
    audit: {
      enabled: true,
      events: ['all'],
      retention: '90d'
    }
  },

  // Cache security
  cache: {
    validateBeforeServe: true,
    namespacePerTenant: true,
    ttl: 86400
  }
};
```

### Example 2: Docker Security Configuration

```dockerfile
# Dockerfile with security hardening
FROM node:20-alpine AS builder

# Security: Non-root build
WORKDIR /app

# Security: Install only production dependencies
COPY package*.json ./
RUN npm ci --only=production && \
    npm cache clean --force

# Security: Minimal runtime image
FROM node:20-alpine

# Security: Create non-root user
RUN addgroup -g 1001 -S nodejs && \
    adduser -S nextjs -u 1001

# Security: Set ownership
WORKDIR /app
COPY --from=builder --chown=nextjs:nodejs /app/node_modules ./node_modules
COPY --from=builder --chown=nextjs:nodejs /app/package*.json ./

# Security: Run as non-root
USER nextjs

# Security: Read-only root filesystem
ENV NODE_ENV=production

EXPOSE 3000

CMD ["node", "index.js"]
```

### Example 3: Kubernetes Security Context

```yaml
apiVersion: v1
kind: Pod
metadata:
  name: superinstance
spec:
  securityContext:
    runAsNonRoot: true
    runAsUser: 1001
    fsGroup: 1001
    seccompProfile:
      type: RuntimeDefault
  containers:
  - name: superinstance
    image: superinstance:latest
    securityContext:
      allowPrivilegeEscalation: false
      readOnlyRootFilesystem: true
      capabilities:
        drop:
        - ALL
      runAsUser: 1001
    volumeMounts:
    - name: tmp
      mountPath: /tmp
    - name: cache
      mountPath: /app/cache
  volumes:
  - name: tmp
    emptyDir: {}
  - name: cache
    emptyDir: {}
```

---

**This security policy is a living document and will be updated as the project evolves.**