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Security: Hatef-Rostamkhani/aws-agent-runtime-zero-trust

Security

docs/security.md

Zero-Trust Security Model

Overview

This document describes the zero-trust security implementation for the AWS Agent Runtime.

Core Principles

1. Never Trust, Always Verify

  • Every request is authenticated and authorized
  • No implicit trust between services
  • Continuous validation of identity and context

2. Least Privilege Access

  • Minimal IAM permissions per service
  • Service-specific KMS keys
  • No wildcard permissions

3. Network Segmentation

  • Private subnets for all workloads
  • NACLs with deny-by-default rules
  • Service mesh for inter-service communication

Security Components

Network Security

  • VPC Design: Multi-AZ with public/private/axon-runtime subnets
  • NACLs: Restrictive rules allowing only necessary traffic
  • Security Groups: Service-specific rules, no wildcards
  • App Mesh: Encrypted service-to-service communication

Identity and Access Management

  • IAM Roles: Service-specific roles with permission boundaries
  • KMS Keys: Isolated encryption keys per service
  • Secrets Manager: Encrypted secrets with rotation
  • STS: Temporary credentials for cross-service access

Application Security

  • SigV4 Signing: AWS signature verification for requests
  • Governance Layer: Pre-call authorization checks
  • Correlation IDs: Request tracing across services
  • Structured Logging: Security event logging

Threat Model

Attack Vectors Considered

  1. Network-based attacks: Lateral movement, eavesdropping
  2. Credential compromise: Key rotation, least privilege
  3. Service impersonation: SigV4 signing, governance checks
  4. Data exfiltration: Encryption at rest/transit
  5. Privilege escalation: IAM boundaries, role isolation

Mitigation Strategies

  1. Network: Private subnets, NACLs, service mesh
  2. Identity: Short-lived credentials, MFA, rotation
  3. Application: Request signing, governance, monitoring
  4. Data: KMS encryption, secrets rotation
  5. Monitoring: Comprehensive logging and alerting

Security Monitoring

Alerts and Detection

  • Unauthorized access attempts
  • Unusual traffic patterns
  • Failed governance decisions
  • Secret access anomalies
  • IAM permission changes

Audit Logging

  • All security events logged to CloudWatch
  • Correlation IDs for request tracing
  • Retention: 1 year for security logs
  • Regular audit reviews

Compliance

Security Standards

  • Zero Trust Architecture: Continuous verification
  • Defense in Depth: Multiple security layers
  • Principle of Least Privilege: Minimal access rights
  • Fail-Safe Defaults: Deny by default

Audit Requirements

  • Security control validation
  • Access log reviews
  • Incident response testing
  • Penetration testing

Incident Response

Security Incident Process

  1. Detection: Automated alerts or manual discovery
  2. Assessment: Determine scope and impact
  3. Containment: Isolate affected systems
  4. Eradication: Remove threat vectors
  5. Recovery: Restore normal operations
  6. Lessons Learned: Update security measures

Contact Information

There aren’t any published security advisories