Do logins by the gdm (or lightdm) user in auth.log mean my system is breached?

Posted by Pramanshu on Ask Ubuntu See other posts from Ask Ubuntu or by Pramanshu
Published on 2014-08-23T06:16:59Z Indexed on 2014/08/23 16:33 UTC
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Filed under:

security

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lightdm

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authentication

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gdm

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display-manager

Please look at this auth.log (from Ubuntu 14.04) I have provided and tell me who this gdm user is and why there are all these unauthenticated logins? I am freaked out; please help!

Here's the /var/log/auth.log file: http://paste.ubuntu.com/8120231/

Update: I know now that "gdm" is gnome desktop manager and it's there because of root. But please look at the log there is more and tell me if my system is breached.

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