Domain-based Message Authentication, Reporting, and Conformance (DMARC)
DMARC: Email authentication protocol. Prevents spoofing, phishing. Requires SPF/DKIM alignment. Provides reporting for domain owners. Enhances email security.
domain names
Domain Keys Identified Mail (DKIM)
DKIM: Email authentication method using cryptographic signatures. Validates sender's domain, prevents spoofing, enhances email security, supports integrity. Implemented via public/private key pairs in DNS.
TR-92 – Unused Domain Names and the Risks of Missing DNS SPF Records
Unused domains pose security risks due to missing DNS SPF records, enabling phishing and malware attacks. Organizations should inventory domains, implement SPF, DKIM, and DMARC records, regularly audit DNS configurations, and educate staff on cybersecurity. Addressing these vulnerabilities is essential for protecting the organization’s reputation.