Which of the following describes the major disadvantage of many Single Sign-On (SSO) implementations?

A.
Once an individual obtains access to the system through the initial log-on, they have access to all resources
within the environment that the account has access to.

B.
The initial logon process is cumbersome to discourage potential intruders.

C.
Once a user obtains access to the system through the initial log-on, they only need to logon to some
applications.

D.
Once a user obtains access to the system through the initial log-on, he has to logout from all other systems

Explanation:
A security issue to consider in an SSO environment is that If an attacker uncovers a credential set, the attacker
would have access to every resource within the environment that the compromised account has access to.

Harris, Shon, All In One CISSP Exam Guide, 6th Edition, McGraw-Hill, 2013, pp. 207, 2078