Any time you see that message in the logs someone has physically opened the server chassis to look, reseat, add or remove hardware components.  it is a security feature available on the server.  If at some time you have a problem where you needed to investigate physical access to the server this would be a useful tool. Let us know if you have any further questions or concerns. Dell | Social Outreach Services - Enterprise
This is most common error for ESM Log OpenManage - Logs -Hardware System Boot - BMC Intrusion sensor detected an intrusion any way to detect what the intrusion is?
OpenManage- Hardware Log - BMC Intrusion sensor detected an intrusion