Le 06/01/2018 à 15:07, Henry Chang a écrit : > Thank you David, > > Also, the KDE 5 is more like Windows GUI, which is not > satisfactory, especially the SDDM. The new SDDM listed all the users in the > LOGIN page, as in the Windows LOGIN. This reveals the information of all the > users of the platform, which is a security issue. In the old KDM LOGIN, we can > choose to key in username and password separately, which is more secured, from > my personal view.
If your main concern happens to be the SDDM login, you may use alternative SDDM themes that don’t display existing users. Debian 9 ships with elarun and debian-elarun themes for example. You may choose them from the System Settings / Startup and Shutdown section, or by editing the /etc/sddm.conf file as administrator and changing / adding the following section: [Theme] Current=$your_preferred_theme where $your_preferred_theme should match one present in /usr/share/sddm/themes. Cheers, --Aurélien