when a client’s accounts payable computer system was relocated, the administrator provided support through a dial-up connection to a server. subsequently, the administrator left the company. no changes were made to the accounts payable system at that time. which of the following situations represents the greatest security risk?
a. security logs are not periodically reviewed for violations.
b. management procedures for user accounts are not documented.

c. user passwords are not required to be in alphanumeric format.

d. user accounts are not removed upon termination of employees.