The operating system must implement cryptographic mechanisms to prevent unauthorized disclosure of all information at rest on all operating system components.

Severity	Group ID	Group Title	Version	Rule ID	Date	STIG Version
high	V-203746	SRG-OS-000405	SRG-OS-000405-GPOS-00184	SV-203746r958872_rule	2024-12-04	3

Description
Operating systems handling data requiring "data at rest" protections must employ cryptographic mechanisms to prevent unauthorized disclosure and modification of the information at rest. Selection of a cryptographic mechanism is based on the need to protect the integrity of organizational information. The strength of the mechanism is commensurate with the security category and/or classification of the information. Organizations have the flexibility to either encrypt all information on storage devices (i.e., full disk encryption) or encrypt specific data structures (e.g., files, records, or fields).

Description

Operating systems handling data requiring "data at rest" protections must employ cryptographic mechanisms to prevent unauthorized disclosure and modification of the information at rest. Selection of a cryptographic mechanism is based on the need to protect the integrity of organizational information. The strength of the mechanism is commensurate with the security category and/or classification of the information. Organizations have the flexibility to either encrypt all information on storage devices (i.e., full disk encryption) or encrypt specific data structures (e.g., files, records, or fields).

ℹ️ Check
Verify the operating system implements cryptographic mechanisms to prevent unauthorized disclosure of all information at rest on all operating system components. If it does not, this is a finding.

✔️ Fix
Configure the operating system to implement cryptographic mechanisms to prevent unauthorized disclosure of all information at rest on all operating system components.