Do not leave your computer unattended, if you are logged in. Log out, lock access (e.g. by simultaneously pressing Windows key + L) or activate a screen saver with secure password, if you leave your job, even if it is only a short period of time.
Switch off your computer when you leave your job for a longer time, such as for example the closing time. Just times where users are most likely not at their workplaces, be preferred by attackers.

Enable password protection on the screen saver:


  • Right-click on a free space of your Desktop and select "Properties" from the menu that appears. Alternatively, you can also use "Display" in the "Control Panel".
  • Go to the Screen Saver tab and activate the Password protection check box.

    Suse Linux with KDE:

    • Go to "KDE Control Center".
    • Go to "Appearance and Themes" and then to "Screen Saver".
    • Check "Start Screen Saver Automatically"
    • Enable the "Require Password to Stop Screen Saver".
    • Click on "Apply"

    Mac OS X:

    It is required that you log on with your login and password. If this is not the case, contact your Administrator.

    • Click "Security & Privacy" under System Preferences.

    Note: to see also the pictures in English go to: Link

    • Select "Require password ... seconds after sleep or screen saver begins."
    • Click "Desktop & Screen Saver" under System Preferences.
    • Select a screen saver if you have not already done so.
    • Then click on "hot corners" in the lower left Corner.
    • Activate the "Screen saver" in the corner of your choice (in the Picture lower left corner).
    • Move the mouse over the active corner of the screen, and the screen saver with password protection is activated immediately.

      Note: The screen saver password is your login password.

    Lock computer:


    • Press the [Ctrl], [Alt], and [Del] keys at the same time. Press the "Block workstation" button.
    • Lock the system by pressing [Windows key] and the [L] key simultaneously.


    Select "Lock session" from the program bar (Suse Linux 9.2 with KDE 3.3) or enter the command "xlock" (all Linux distributions) in the terminal window.

    Mac OS X:

    • Press the [ctrl] and [CD Eject] buttons simultaneously.
    • In the now visible window, activate the idle state.
    • To return to work, you must enter your login Password.