I tend to be on the paranoid side, and for some time there are messages in my log file that tend to get me going close to the edge of sanity. Could someone explain the following in my auth.log file that indicates a user named dnsmasq changed their password in my computer. I realize that this might be a dumb question, but this kind of thing has been going on for several years and every time I see something like it, I tend to become anxious and afraid that someone is spying on me. Can anyone lay my fears to rest?
discover-healing-honey sudo: pam_unix(sudo:session): session closed for user root
May 15 16:51:20 discover-healing-honey polkitd(authority=local): Registered Authentication Agent for unix-session:/org/freedesktop/ConsoleKit/Session2 (system bus name :1.55 [/usr/lib/policykit-1-gnome/polkit-gnome-authentication-agent-1], object path /org/gnome/PolicyKit1/AuthenticationAgent, locale en_US.UTF-8)
May 15 16:55:39 discover-healing-honey useradd[16831]: new user: name=dnsmasq, UID=115, GID=65534, home=/var/lib/misc, shell=/bin/false
May 15 16:55:39 discover-healing-honey usermod[16836]: change user 'dnsmasq' password
May 15 16:55:39 discover-healing-honey chage[16841]: changed password expiry for dnsmasq
May 15 16:55:39 discover-healing-honey chfn[16844]: changed user 'dnsmasq' information
May 15 16:56:02 discover-healing-honey polkit-agent-helper-1[16995]: pam_ecryptfs: pam_sm_authenticate: /home/bee-hives-rule is already mounted
May 15 16:56:02 discover-healing-honey polkitd(authority=local): Operator of unix-session:/org/freedesktop/ConsoleKit/Session2 successfully authenticated as unix-user:bee-hives-rule to gain TEMPORARY authorization for action com.ubuntu.softwareproperties.applychanges for unix-process:7420:308018 [/usr/bin/python3 /usr/bin/software-properties-gtk] (owned by unix-user:bee-hives-rule)
May 15 16:56:41 discover-healing-honey sg[21950]: user 'root' (login '???' on pts/1) switched to group 'mlocate'
May 15 16:56:41 discover-healing-honey sg[21950]: user 'root' (login '???' on pts/1) returned to group 'root'
May 15 17:02:49 discover-healing-honey lightdm: pam_unix(lightdm-greeter:session): session opened for user lightdm by (uid=0)
May 15 17:02:49 discover-healing-honey lightdm: pam_ck_connector(lightdm-greeter:session): nox11 mode, ignoring PAM_TTY :0
May 15 17:02:53 discover-healing-honey dbus[1326]: [system] Rejected send message, 7 matched rules; type="method_return", sender=":1.19" (uid=0 pid=1713 comm="/usr/sbin/dnsmasq --no-resolv --keep-in-foreground") interface="(unset)" member="(unset)" error name="(unset)" requested_reply="0" destination=":1.6" (uid=0 pid=1546 comm="NetworkManager ")
May 15 17:02:56 discover-healing-honey lightdm: pam_succeed_if(lightdm:auth): requirement "user ingroup nopasswdlogin" not met by user "bee-hives-rule"
May 15 17:02:56 discover-healing-honey lightdm: pam_succeed_if(lightdm:auth): requirement "user ingroup nopasswdlogin" not met by user "bee-hives-rule"