DKIM

Technology & Computing abbreviation · Cybersecurity

DKIM
Stands forDomainKeys Identified Mail
CategoriesTechnology & Computing

DKIM stands for DomainKeys Identified Mail, a cybersecurity abbreviation.

An email authentication method in which the sending server adds a cryptographic signature to message headers, verifiable with a public key published in the sender's DNS, proving the domain authorized the message and it was not altered.

Example: Mail from the new helpdesk failed DMARC until we published its DKIM key.

Usage notes

Created by merging Yahoo's DomainKeys with Cisco's Identified Internet Mail and standardized in RFC 6376 (2011). Unlike SPF, DKIM survives forwarding because the signature travels with the message. Selectors let a domain publish several keys, such as one per sending service.

More cybersecurity abbreviations

  • DAST – Dynamic application security testing
  • DDoS – Distributed denial of service
  • DES – Data Encryption Standard
  • DevSecOps – Development, security and operations
  • DFIR – Digital forensics and incident response
  • DH – Diffie-Hellman (key exchange)
  • DLP – Data loss prevention
  • DMARC – Domain-based Message Authentication, Reporting and Conformance
  • DoS – Denial of service
  • DPI – Deep packet inspection
  • DSA – Digital Signature Algorithm
  • E2EE – End-to-end encryption

See all 119 cybersecurity abbreviations →