Internet Explorer must be configured to disallow users to change policies.

From Internet Explorer 9 Security Technical Implementation Guide

Associated with IA controls: ECSC-1

SV-40552r1_rule Internet Explorer must be configured to disallow users to change policies.

Vulnerability discussion

Users who change their Internet Explorer security settings could enable the execution of dangerous types of code from the Internet and web sites listed in the Restricted Sites zone in the browser. This setting prevents users from changing the Internet Explorer policies on the machine. Policy changes should be made by administrators only, so this setting should be enabled. If you enable this policy setting, you disable the Custom level button and Security level for this zone slider on the Security tab in the Internet Options dialog box. If this policy setting is disabled or not configured, users will be able to change the settings for security zones. It prevents users from changing security zone policy settings that are established by the administrator.

Check content

Fix text

Set the policy value for Computer Configuration -> Administrative Templates -> Windows Components -> Internet Explorer “Security Zones: Do not allow users to change policies” to “Enabled”.

Pro Tips

Lavender hyperlinks in small type off to the right (of CSS class id, if you view the page source) point to globally unique URIs for each document and item. Copy the link location and paste anywhere you need to talk unambiguously about these things.

You can obtain data about documents and items in other formats. Simply provide an HTTP header Accept: text/turtle or Accept: application/rdf+xml.