I noticed in the log: Restarted after unexpected shutdown. But when I checked the users settings I noticed a new created account. There was a new user with two chinese signs without password. I directly looked at the logs from my connection with CurrPorts to see if anybody did try (and succeeded) to login. I do log RDP and BlueIris ports incoming IP's. But there was no login between 7 and 10.30 am other than from my own IP from work. So I think that when BI server stalls and is coming up again it created a ghost account. The log from Blue Iris did show a user login (?). See first screenshot.