4707 Security log · Policy Change medium severity low volume

Windows Event ID 4707 — A trust to a domain was removed

An existing domain trust was removed.

Why event 4707 matters

Removal of legitimate trusts can disrupt authentication for dependent systems. May be part of Active Directory sabotage.

How to detect it

Alert on occurrence. Verify with change management.

Log source
Security
Advanced Audit Policy — enable the 'Policy Change' subcategory (Success and/or Failure).
Fields to pivot on
SubjectUserNameTargetUserNameLogonTypeIpAddressWorkstationName

Detection queries

Starting points — adapt the log source, projected fields and thresholds for your environment.

Sentinel / Defender KQL
SecurityEvent
| where EventID == 4707   // A trust to a domain was removed
| project TimeGenerated, Computer, SubjectUserName, TargetUserName, LogonType, IpAddress, WorkstationName
| sort by TimeGenerated desc
Splunk SPL
index=* sourcetype="WinEventLog:Security" EventCode=4707
| stats count earliest(_time) as first_seen latest(_time) as last_seen by ComputerName
| sort - count   `# A trust to a domain was removed — add EventData fields: SubjectUserName, TargetUserName, LogonType, IpAddress`
Hunt event 4707 in Sentinel/Defender →
Build a KQL query for this event in the KQL Query Builder.
Search all event IDs →
Open the interactive Windows Event ID lookup.

Related Policy Change events

4698 A scheduled task was created 4699 A scheduled task was deleted 4700 A scheduled task was enabled 4701 A scheduled task was disabled 4702 A scheduled task was updated 4703 A token right was adjusted 4704 A user right was assigned 4705 A user right was removed 4706 A new trust was created to a domain 4713 Kerberos policy was changed 4714 Encrypted data recovery policy was changed 4715 The audit policy (SACL) on an object was changed

Frequently asked questions

What is Windows Event ID 4707?

A trust to a domain was removed. An existing domain trust was removed.

Which log records event 4707?

Event 4707 is written to the Security channel by Microsoft-Windows-Security-Auditing. Advanced Audit Policy — enable the 'Policy Change' subcategory (Success and/or Failure).

How do you detect activity around event 4707?

Alert on occurrence. Verify with change management.