generated: '2026-06-20'
method: searched
source: >-
  Probed the API base host (mgn.us-east-1.amazonaws.com) and the AWS corporate
  host (aws.amazon.com) for /.well-known/ discovery documents.
hosts:
  - host: https://mgn.us-east-1.amazonaws.com
    note: >-
      The MGN service endpoint requires AWS SigV4 authentication and returns
      403 for all unauthenticated /.well-known/ probes; no public discovery
      documents are served.
    documents:
      - path: /.well-known/security.txt
        status: 403
      - path: /.well-known/openid-configuration
        status: 403
      - path: /.well-known/oauth-authorization-server
        status: 403
      - path: /.well-known/api-catalog
        status: 403
      - path: /.well-known/ai-plugin.json
        status: 403
  - host: https://aws.amazon.com
    note: AWS-wide vulnerability disclosure policy (RFC 9116), applies to MGN.
    documents:
      - path: /.well-known/security.txt
        status: 200
        file: amazon-application-migration-service-security.txt