# EVTX integrity

**Windows DFIR notes are no longer maintained on InfoSec-Notes. Updated versions can be found on:** [**artefacts.help**](https://artefacts.help/)**.**

The following events occurs whenever the associated logs are cleared:

* Event: `1102: The audit log was cleared`.\
  Location: victim `Security` hive. Includes the SID, domain, username and `Logon ID` of the user that cleared the logs.
* Event: `104: The System log file was cleared`.\
  Location: victim `System` hive. Includes the domain and username of the user that cleared the logs.

Additionally, every event of a given event log hive has an `EventRecordID` field representing an index number, sequentially incremented, of the event in that particular hive. Any disparity in record ids may reflect a deletion of event(s) in the hive.


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