Prof. Khaled Mahmoud ABU-ZEID
Director of Water Resources Program
The Center for Environment and Development for the Arab Region and Europe (CEDARE)
In computer security, a login or logon or sign in or sign on refers to the credentials required to obtain access to a computer system or other restricted area. Logging in or logging on or signing in or signing on is the process by which individual access to a computer system is controlled by identifying and authenticating the user through the credentials presented by the user.