Even though the Open-Xchange Server is an extremely secure communication platform, no security system offers absolute protection. This is particularly true since the groupware web interface is not an isolated system, but can instead by used from external systems as well. To maintain your own protection, you should change your password from time to time – about every four weeks is suggested. You can change this setting under the Password tab. First, enter your old password in the Current password line. Next come up with a new password and enter this twice into the two fields below the old password. For the encryption mechanism, you can choose between SHA and MD5. Make sure to choose a password that is hard to guess. Birthdays, personal names or movie titles are poor choices. The ideal password contains special characters, is at least eight characters long and cannot be guessed by people you know based on your personal biography. Do not use birthdays, names or the title of your favorite film. Once you have created a new password, save your changes by clicking on the Save button.