Telemetry must be disabled.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-223170	DTBF200	SV-223170r612236_rule		Medium

Description
The Telemetry feature provides this capability by sending performance and usage info to Mozilla. As you use Firefox, Telemetry measures and collects non-personal information, such as performance, hardware, usage and customizations. It then sends this information to Mozilla on a daily basis and we use it to improve Firefox.

STIG	Date
Mozilla Firefox Security Technical Implementation Guide	2020-12-10

Details

Check Text ( C-24843r531327_chk )
Type "about:config" in the address bar, verify that the preference name “toolkit.telemetry.enabled" is set to “false” and locked. Criteria: If the parameter is set incorrectly, then this is a finding. If the setting is not locked, then this is a finding.

Fix Text (F-24831r531328_fix)
Ensure the preference “toolkit.telemetry.enabled" is set and locked to the value of “false”.