Suggest the most appropriate security measures for each of the situations described below.

a. The Western Union bank uses an electronic funds transfer (EFT) system to transmit sensitive financial data between its branches all over the world.

b. A fighter jet simulation company has set up an off-site computer-based training center for the F35. The company wishes to restrict access to the site to authorized employees. Since each employee's use of the center is occasional, it does not wish to provide the employees with keys to access the center.

c. A golf club uses a simple password system to protect its database. The club has created a new Web site to allow both its members and its employees to use the new Web-based system to access and update information. The club finds that it needs a more comprehensive security system to grant different privileges (such as read-only versus create or update) to different users.

d. A training center at the Northern Technical University has experienced considerable difficulty with unauthorized users who access files and databases by appropriating passwords from legitimate users.