Phantom User's in browser
 

I was in the setting of chromium browser an noticed that there were 3 users set and thought that looked strange cause i'm suppose to be the only user on my notebook. Can some one please let me now how they got there and why.Any way I removed them from the settings and if you would what else should I be worried about.Thanks in advance.

well it you would tell us what they were..........
then maybe we could help .

what were they ?
some might have been just the OS
wheel , users,video,audio,....

Chromium does that.