Why is systemd starting Firefox?

[local10 <local10@tutanota.com>]

Hi,

Based on the log records (see below) it looks like systemd is regularly starting Firefox. I don't recall setting up anything like that, so why is systemd doing it?

Thanks

# cat /var/log/syslog
...
Jan 23 06:31:37 test systemd[922]: Started Firefox ESR - Web Browser.
...
Jan 23 06:31:53 test systemd[922]: app-firefox\x2desr-bcb63a3a10404a7fa8443768412b385a.scope: Succeeded.
Jan 23 06:31:53 test systemd[922]: app-firefox\x2desr-bcb63a3a10404a7fa8443768412b385a.scope: Consumed 4.746s CPU time.
Jan 23 08:05:28 test systemd[922]: app-firefox\x2desr-512a87e34cb047e0ace37d7988d04f1b.scope: Succeeded.
Jan 23 08:05:28 test systemd[922]: app-firefox\x2desr-512a87e34cb047e0ace37d7988d04f1b.scope: Consumed 2h 43min 45.540s CPU time.
Jan 23 08:05:31 test systemd[922]: Started Firefox ESR - Web Browser.
...
Jan 23 09:42:17 test dbus-daemon[430]: [system] Activating via systemd: service name='org.freedesktop.hostname1' unit='dbus-org.freedesktop.hostname1.service' requested by ':1.829' (uid=1007 pid=53514 comm="/usr/lib/firefox-esr/firefox-esr -ProfileManager ")
Jan 23 09:43:38 test dbus-daemon[430]: [system] Activating via systemd: service name='org.freedesktop.hostname1' unit='dbus-org.freedesktop.hostname1.service' requested by ':1.833' (uid=1007 pid=53514 comm="/usr/lib/firefox-esr/firefox-esr -ProfileManager ")
...

# systemctl list-units | grep -i firefox


# cat /etc/debian_version && uname -a
11.2
Linux srv07 5.10.0-11-amd64 #1 SMP Debian 5.10.92-1 (2022-01-18) x86_64 GNU/Linux