Logon options must be configured and enforced (Restricted Sites zone).

From Internet Explorer 9 Security Technical Implementation Guide

Part of DTBI136-User Authentication - Logon - Restricted

Associated with IA controls: ECSC-1

SV-40619r1_rule Logon options must be configured and enforced (Restricted Sites zone).

Vulnerability discussion

Users could submit credentials to servers operated by malicious people who could then attempt to connect to legitimate servers with those captured credentials. Care must be taken with user credentials, automatic logon performance, and how default Windows credentials are passed to web sites.

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Fix text

Set the policy value for Computer Configuration -> Administrative Templates -> Windows Components -> Internet Explorer -> Internet Control Panel -> Security Page -> Restricted Sites Zone -> "Logon options" to “Enabled” and select "Anonymous logon" from the drop-down box.

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