Apple iOS must implement the management setting: limit Ad Tracking.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-81809	AIOS-12-010600	SV-96523r1_rule		Low

Description
Ad Tracking refers to the advertisers' ability to categorize the device and spam the user with ads that are most relevant to the user's preferences. By not "Force limiting ad tracking", advertising companies are able to gather information about the user and device's browsing habits. If "Limit Ad Tracking" is not limited, a database of browsing habits of DoD devices can be gathered and stored under no supervision of the DoD. By limiting ad tracking, this setting does not completely mitigate the risk, but it limits the amount of information gathering. SFR ID: FMT_SMF_EXT.1.1 #47

Description

Ad Tracking refers to the advertisers' ability to categorize the device and spam the user with ads that are most relevant to the user's preferences. By not "Force limiting ad tracking", advertising companies are able to gather information about the user and device's browsing habits. If "Limit Ad Tracking" is not limited, a database of browsing habits of DoD devices can be gathered and stored under no supervision of the DoD. By limiting ad tracking, this setting does not completely mitigate the risk, but it limits the amount of information gathering. SFR ID: FMT_SMF_EXT.1.1 #47

STIG	Date
Apple iOS 12 Security Technical Implementation Guide	2018-11-28

Details

Check Text ( C-81601r1_chk )
Review configuration settings to confirm "Force limited ad tracking" is checked. This check procedure is performed on both the Apple iOS management tool and the Apple iOS device. Note: If an organization has multiple configuration profiles, the check procedure must be performed on the relevant configuration profiles applicable to the scope of the review. In the Apple iOS management tool, verify "Force limited ad tracking" is checked. Alternatively, verify the text "forceLimitAdTracking" appears in the configuration profile (.mobileconfig file). On the Apple iOS device: 1. Open the Settings app. 2. Tap "General". 3. Tap "Profiles & Device Management". 4. Tap the Configuration Profile from the iOS management tool containing the management policy. 5. Tap "Restrictions". 6. Verify "Limit ad tracking enforced" is present. If "limited ad tracking enforced" is missing in the Apple iOS management tool, "forceLimitAdTracking" does not appear in the configuration profile, or the restrictions policy on the Apple iOS device from the Apple iOS management tool does not list "Limit ad tracking enforced", this is a finding.

Check Text ( C-81601r1_chk )

Review configuration settings to confirm "Force limited ad tracking" is checked.

This check procedure is performed on both the Apple iOS management tool and the Apple iOS device.

Note: If an organization has multiple configuration profiles, the check procedure must be performed on the relevant configuration profiles applicable to the scope of the review.

In the Apple iOS management tool, verify "Force limited ad tracking" is checked.

Alternatively, verify the text "forceLimitAdTracking" appears in the configuration profile (.mobileconfig file).

On the Apple iOS device:
1. Open the Settings app.
2. Tap "General".
3. Tap "Profiles & Device Management".
4. Tap the Configuration Profile from the iOS management tool containing the management policy.
5. Tap "Restrictions".
6. Verify "Limit ad tracking enforced" is present.

If "limited ad tracking enforced" is missing in the Apple iOS management tool, "forceLimitAdTracking" does not appear in the configuration profile, or the restrictions policy on the Apple iOS device from the Apple iOS management tool does not list "Limit ad tracking enforced", this is a finding.

Fix Text (F-88659r1_fix)
Install a configuration profile to limit advertisers' ability to track the user's web browsing preferences.