NET-20.5 · User Digital Signatures for Outgoing Email

Control Description

Mechanisms exist to enable users to digitally sign their emails, allowing external parties to authenticate the email’s sender and its contents according to the Domain-based Message Authentication Reporting and Conformance (DMARC) email authentication protocol.

Control Question
Assessment question for control validation

Does the organization enable users to digitally sign their emails, allowing external parties to authenticate the email’s sender and its contents according to the Domain-based Message Authentication Reporting and Conformance (DMARC) email authentication protocol?

Control Weighting
6
Validation Cadence
Annual
NIST CSF Function
Protect
Supply Chain Risk Management (SCRM) Tiers
Applicable SCRM tier levels for this control
Tier 3 - Tactical
Core Control Designations
Special designations and baseline inclusions
ESP Level 2: NET-20.5
ESP Level 3: NET-20.5