id: dmarc-detect

info:
  name: DNS DMARC Detection
  author: juliosmelo
  severity: info
  description: |
    DMARC is an open email authentication protocol that provides domain-level protection of the email channel. DMARC authentication detects and prevents email spoofing techniques used in phishing, business email compromise (BEC) and other email-based attacks.
  reference:
    - https://dmarc.org/
    - https://dmarc.org/wiki/FAQ#Why_is_DMARC_important.3F
  tags: dns,dmarc

dns:
  - name: "_dmarc.{{FQDN}}"
    type: TXT

    extractors:
      - type: regex
        group: 1
        regex:
          - "IN\tTXT\t(.+)"