Apple macOS 15 (Sequoia) Security Technical Implementation Guide

The Apple macOS 15 (Sequoia) Security Technical Implementation Guide (V1 R8) has 160 STIG checks. New to STIG checklists? Read What is a STIG checklist?, CKL vs CKLB, and STIG vs SCAP benchmark.

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Severity

Version

V1 · R8

CurrentPublished Wed Sep 30 2026

The macOS system must enforce FileVault.

Apple macOS 15 (Sequoia) Security Technical Implementation Guide

Assessment Title

Rule Text

The macOS system must enforce FileVault.

Description

Discussion Text

The information system implements cryptographic mechanisms to protect the confidentiality and integrity of information stored on digital media during transport outside of controlled areas.

Satisfies: SRG-OS-000185-GPOS-00079, SRG-OS-000404-GPOS-00183, SRG-OS-000405-GPOS-00184

New to STIG checklists? Read What is a STIG checklist? and CKL vs CKLB.

Objective

V-268556

Rule

SV-268556r1131248_rule

Severity

high

Rule Version

APPL-15-005020

Documentable

false

IA Controls

NIST SP 800-53

Rev 5

Assessment Procedure

Check Text

Verify the macOS system is configured to enforce FileVault with the following command:

dontAllowDisable=$(/usr/bin/osascript -l JavaScript << EOS
$.NSUserDefaults.alloc.initWithSuiteName('com.apple.MCX')\
.objectForKey('dontAllowFDEDisable').js
EOS
)
fileVault=$(/usr/bin/fdesetup status | /usr/bin/grep -c "FileVault is On.")
if [[ "$dontAllowDisable" == "true" ]] && [[ "$fileVault" == 1 ]]; then
  echo "1"
else
  echo "0"
fi

If the result is not "1", this is a finding.

Implementation Procedure

Fix Text

Refer to the FileVault supplemental to implement this rule. Configure the macOS system to enforce FileVault by installing the "com.apple.MCX" configuration profile.

STIG check 133 of 160 in the Apple macOS 15 (Sequoia) STIG checklist

← Previous · V-268555The macOS system must ensure System Integrity Protection is enabled.Next · V-268557 →The macOS system must enable macOS Application Firewall.