What are the necessary letters in my password? Note: It depends on the password length (the longer the password, the more complicated it is). The password may contain capital and small letters, numbers and characters. It must contain at least 8 letters. We prefer 16 or more, as the longer the password, the harder it is to be hacked. How can I have a password that long? It is easy. Just choose 4 random words and string them together to make your own password. In case of any inquiries, please contact the Department of Information Management at the Deanship of Information Technology.