Trusted domain information was modified

// EVENT DEFINITION:

Active Directory trust properties, SID filtering, or direction settings were updated.

// DETAILED TELEMETRY & CONTEXT:

Event ID 4716 logs changes to existing domain trust relationships (`Trust Attributes`, `Trust Direction`, or `SID Filtering`). Disabling SID filtering or altering trust attributes across forest/domain boundaries enables adversaries with compromised child domains to forge SID History (`SID Hopping`) and compromise the root forest.

[ ! ]Failure Reason / Root Cause Analysis

Modification of domain trust object (`TrustedDomainName` properties updated).

Operational Metadata & Applicability

Log Category:Policy Change

Audit Type Classification:Success Audit

Supported Operating Systems:Windows Server 2016, 2019, 2022 / Windows Client 10, 11 (Enterprise / Pro)

Threat Hunting Keywords:

4716trusted domain modifiedsid filteringdomain trustsid history

MITRE ATT&CK Framework Alignment

T1134.005

Account Manipulation: SID-History InjectionTactic: Persistence

T1550

Use Alternate Authentication MaterialTactic: Lateral Movement

Mitigation Playbook & Recommended SOC Actions

•Audit `Trust Attributes` changes. Alert immediately if SID filtering (`TDO_BUS_REQUIRE_SSL` or quarantine flags) is disabled across forest trusts.

Representative Windows Event XML Schema

<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
  <System>
    <Provider Name="Microsoft-Windows-Security-Auditing" Guid="{54849625-5478-4994-A5BA-3E3B0328C30D}" />
    <EventID>4716</EventID>
    <Version>0</Version>
    <Level>0</Level>
    <Task>12544</Task>
    <Opcode>0</Opcode>
    <Keywords>0x8020000000000000</Keywords>
    <TimeCreated SystemTime="2026-07-17T09:54:44.296Z" />
    <EventRecordID>1048576</EventRecordID>
    <Correlation />
    <Execution ProcessID="612" ThreadID="1024" />
    <Channel>Security</Channel>
    <Computer>DC01.enterprise.internal</Computer>
    <Security />
  </System>
  <EventData>
    <Data Name="SubjectUserSid">S-1-5-18</Data>
    <Data Name="SubjectUserName">SYSTEM</Data>
    <Data Name="SubjectDomainName">NT AUTHORITY</Data>
    <Data Name="SubjectLogonId">0x3e7</Data>
    <!-- Event telemetry fields specific to Trusted domain information was modified -->
  </EventData>
</Event>

Correlated / Related Security Event IDs

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