SC-11: Trusted Path

CSF v1.1 References:

PF v1.0 References:

Threats Addressed:


  • Low


  • Moderate


  • High


Next Version:

Control Statement

The information system establishes a trusted communications path between the user and the following security functions of the system: [Assignment: organization-defined security functions to include at a minimum, information system authentication and re-authentication].

Supplemental Guidance

Trusted paths are mechanisms by which users (through input devices) can communicate directly with security functions of information systems with the requisite assurance to support information security policies. The mechanisms can be activated only by users or the security functions of organizational information systems. User responses via trusted paths are protected from modifications by or disclosure to untrusted applications. Organizations employ trusted paths for high-assurance connections between security functions of information systems and users (e.g., during system logons). Enforcement of trusted communications paths is typically provided via an implementation that meets the reference monitor concept.

Control Enhancements

SC-11(1): Logical Isolation


(Not part of any baseline)

The information system provides a trusted communications path that is logically isolated and distinguishable from other paths.