Usernames and passwords are the main targets of any attack, Every time a user logs into a system, the user will access the operating system with a username and password. If they access another application, they will probably use a different username and password. This will increase the possibility of forgetting how to authenticate or even writing down the passwords, which can cause password leak.
Single sign-on (SSO) reduces the number of attacks because users log in only once each day and can use one username and ...