Hello,
I’m linux noob 
I installed Debian 8 and Virtualmin.
https://www.aukcjoner.pl/gallery/027050717-.html#I1
It is normal? Or someone hacked my server?
Howdy,
Well, I doubt anyone hacked your server based on that that message.
However, I don’t believe an auto-login is enabled by default though…
You can check what it’s set to by looking in Webmin -> Webmin -> Webmin Configuration -> Authentication, and there, see what “Auto-logout after” is set to.
If that’s set, you can either increase the timeout or disable it entirely.
-Eric
Thanks, it is message after aut logout. I was change auto logut for 1 minut and i see this message.
Andrew