Finding #13

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Email Domain-based Message Authentication, Reporting, and Conformance (DMARC) Failing Validation

Severity Level: Priority 2
Category: Security / Operations

Description:
DMARC is configured but failing validation due to SPF/DKIM misalignment or third-party sender issues, exposing the bank to phishing and spoofing risks.

Impact:

  • Increased phishing and domain spoofing risks.
  • Emails routed to spam, reducing deliverability.
  • Erosion of customer trust and regulatory scrutiny.

FFIEC Reference:

  • FFIEC IT Examination Handbook (November 2016):
    • "Email authentication protocols reduce phishing risks." (p. 33)
    • "Proper DMARC configuration ensures compliance." (p. 35)

Recommendations:

  • Align SPF/DKIM: Correct misconfigurations in DNS records.
  • Test DMARC: Use tools like MxToolbox for validation.
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