How can I monitor whether a Password Filter DLL is attempting to load without a valid Microsoft catalog signature?
After configuring Additional LSA Protection, the system logs Event ID 3065 and Event ID 3066 in the `Applications and Services Logs\Microsoft\Windows\CodeIntegrity` log. Event 3065 records a driver that did not meet shared section security requirements, while Event 3066 records a driver that did not meet Microsoft's signature level requirements—both indicate a non-compliant DLL was allowed to load due to policy. You can query these events using `wevtutil qe Microsoft-Windows-CodeIntegrity/Operational /rd:true /f:text /q:"*[system/eventid=3065 and 3066]"`. The original article Configure Additional LSA Protection to monitor Password Filter DLL provides full details.
Event 3065Event 3066CodeIntegritymonitoringPassword Filter DLLwevtutil