I have installed Kali Linux and I found some puzzling entries in wtmp log file. Unknown user logs in for a short while when I boot my computer or switch accounts and most of the time when I shut down.Can you please explain what is the reason for these entries? I have used Ubuntu for a while and I have never seen this kind of entries. I also find it puzzling that it uses after each log out new console, which is one higher than the previous, i.e tty7 > tty8 > tty9 (see the entries from March 7th).This is a sample from my wtmp log file given by the command last:account  pts/0        :0.0             Fri Mar  7 18:50   still logged in   account  tty9         :0               Fri Mar  7 18:50   still logged in   (unknown tty9         :0               Fri Mar  7 18:50 - 18:50  (00:00)    root     pts/0        :0.0             Fri Mar  7 18:49 - 18:49  (00:00)    root     tty8         :0               Fri Mar  7 18:49 - 18:50  (00:00)    (unknown tty8         :0               Fri Mar  7 18:49 - 18:49  (00:00)    account  pts/0        :0.0             Fri Mar  7 18:48 - 18:49  (00:00)    account  tty7         :0               Fri Mar  7 18:48 - 18:49  (00:00)    (unknown tty7         :0               Fri Mar  7 18:48 - 18:48  (00:00)    reboot   system boot  3.12-kali1-amd64 Fri Mar  7 18:47 - 18:50  (00:02)...(unknown tty8         :0               Thu Mar  6 10:25 - down   (00:00)    account  pts/1        :0.0             Wed Mar  5 20:51 - 09:42  (12:50)    account  pts/0        :0.0             Wed Mar  5 20:49 - 09:42  (12:52)    account  tty7         :0               Wed Mar  5 20:49 - 10:25  (13:35)    (unknown tty7         :0               Wed Mar  5 20:49 - 20:49  (00:00)    reboot   system boot  3.12-kali1-amd64 Wed Mar  5 20:49 - 10:25  (13:35)    account  pts/1        :0.0             Tue Mar  4 19:22 - 03:13  (07:50)    account  pts/0        :0.0             Tue Mar  4 19:21 - 03:13  (07:51)    account  tty8         :0               Tue Mar  4 19:11 - 03:14  (08:02)    (unknown tty8         :0               Tue Mar  4 19:11 - 19:11  (00:00)    root     pts/1        :0.0             Tue Mar  4 17:51 - 19:11  (01:19)    root     pts/0        :0.0             Tue Mar  4 17:50 - 19:11  (01:20)    root     tty7         :0               Tue Mar  4 17:50 - 19:11  (01:20)    (unknown tty7         :0               Tue Mar  4 17:49 - 17:50  (00:00)    reboot   system boot  3.12-kali1-amd64 Tue Mar  4 17:49 - 03:14  (09:24)
Unknown entries in Kali Linux wtmp log file
debian;login;kali linux;last