Did you notice a new user account and profile named UpdatusUser appear on your system?
If so, I am guessing you recently you installed the latest version of Nvidia device drivers?
Most recent versions of Nvidia drivers now make some serious changes in the system which is a bit concerning so I wanted to give you a heads up.
The change creates a new (enabled) user account on the computer as well as a (locked) user profile folder with the same name “UpdatusUser
This occurs if you choose the default installation options instead of the custom method. To avoid this, simply choose custom install method and uncheck the box next to "update" option on the what to install screen.
If you already have installed the driver package using default options and want to get rid of this new account and profile, open Add-Remove Programs list (Sart > Run > appwiz.cpl > OK) and uninstall Nvidia Update entry. It should remove the account as well as the profile from your system:
Note: The update feature supposed to automatically update the device drivers in the background but I don't believe it is actually doing its job. Besides, I do find it a bit odd if not suspicious for this application to create a new user account and profile to accomplish this task which would not have to occur all that often and when it is needed, I rather decide which update to install and when.