STIGQter: STIG Summary: Apple macOS 15 (Sequoia) Security Technical Implementation Guide Version: 1 Release: 7 Benchmark Date: 01 Apr 2026:

The macOS system must display the Standard Mandatory DOD Notice and Consent Banner at the login window.

DISA Rule

SV-268431r1131186_rule

Vulnerability Number

V-268431

Group Title

SRG-OS-000023-GPOS-00006

Rule Version

APPL-15-000025

Severity

CAT II

CCI(s)

• CCI-000048 - Display an organization-defined system use notification message or banner to users before granting access to the system that provides privacy and security notices consistent with applicable federal laws, Executive Orders, directives, policies, regulations, standards, and guidelines.
• CCI-000050 - Retain the notification message or banner on the screen until users acknowledge the usage conditions and take explicit actions to log on to or further access the system.
• CCI-001384 - For publicly accessible systems, display system use information with organization-defined conditions before granting further access to the publicly accessible system.
• CCI-001385 - For publicly accessible systems, displays references, if any, to monitoring that are consistent with privacy accommodations for such systems that generally prohibit those activities.
• CCI-001386 - For publicly accessible systems, displays references, if any, to recording that are consistent with privacy accommodations for such systems that generally prohibit those activities.
• CCI-001387 - For publicly accessible systems, displays references, if any, to auditing that are consistent with privacy accommodations for such systems that generally prohibit those activities.
• CCI-001388 - For publicly accessible systems, includes a description of the authorized uses of the system.

Weight

10

Fix Recommendation

Configure the macOS system to display a policy banner by creating an RTF file containing the required text. Name the file "PolicyBanner.rtfd" and place it in "/Library/Security/".

Update the permissions of the "/Library/Security/PolicyBanner.rtfd" file with the following command:

/usr/bin/sudo /bin/chmod 644 /Library/Security/PolicyBanner.rtfd

Check Contents

Verify the macOS system is configured to display a policy banner with the following command:

/bin/ls -ld /Library/Security/PolicyBanner.rtf* | /usr/bin/wc -l | /usr/bin/tr -d ' '

If the command does not return "1", this is a finding.

The banner text of the document must read:

"You are accessing a U.S. Government (USG) Information System (IS) that is provided for USG-authorized use only. By using this IS (which includes any device attached to this IS), you consent to the following conditions:

-The USG routinely intercepts and monitors communications on this IS for purposes including, but not limited to, penetration testing, COMSEC monitoring, network operations and defense, personnel misconduct (PM), law enforcement (LE), and counterintelligence (CI) investigations.

-At any time, the USG may inspect and seize data stored on this IS.

-Communications using, or data stored on, this IS are not private, are subject to routine monitoring, interception, and search, and may be disclosed or used for any USG authorized purpose.

-This IS includes security measures (e.g., authentication and access controls) to protect USG interests--not for your personal benefit or privacy.

-Notwithstanding the above, using this IS does not constitute consent to PM, LE or CI investigative searching or monitoring of the content of privileged communications, or work product, related to personal representation or services by attorneys, psychotherapists, or clergy, and their assistants. Such communications and work product are private and confidential. See User Agreement for details."

If the text is not worded exactly this way, this is a finding.

Vulnerability Number

V-268431

Documentable

False

Rule Version

APPL-15-000025

Severity Override Guidance

Verify the macOS system is configured to display a policy banner with the following command:

/bin/ls -ld /Library/Security/PolicyBanner.rtf* | /usr/bin/wc -l | /usr/bin/tr -d ' '

If the command does not return "1", this is a finding.

The banner text of the document must read:

"You are accessing a U.S. Government (USG) Information System (IS) that is provided for USG-authorized use only. By using this IS (which includes any device attached to this IS), you consent to the following conditions:

-The USG routinely intercepts and monitors communications on this IS for purposes including, but not limited to, penetration testing, COMSEC monitoring, network operations and defense, personnel misconduct (PM), law enforcement (LE), and counterintelligence (CI) investigations.

-At any time, the USG may inspect and seize data stored on this IS.

-Communications using, or data stored on, this IS are not private, are subject to routine monitoring, interception, and search, and may be disclosed or used for any USG authorized purpose.

-This IS includes security measures (e.g., authentication and access controls) to protect USG interests--not for your personal benefit or privacy.

-Notwithstanding the above, using this IS does not constitute consent to PM, LE or CI investigative searching or monitoring of the content of privileged communications, or work product, related to personal representation or services by attorneys, psychotherapists, or clergy, and their assistants. Such communications and work product are private and confidential. See User Agreement for details."

If the text is not worded exactly this way, this is a finding.

Check Content Reference

M

Target Key

5661