Which of the following would be the BEST recommendation to prevent this type of activity in the future?

A penetration tester discovers during a recent test that an employee in the accounting department has been making changes to a payment system and redirecting money into a personal bank account. The penetration test was immediately stopped.

Which of the following would be the BEST recommendation to prevent this type of activity in the future?
A . Enforce mandatory employee vacations
B . Implement multifactor authentication
C . Install video surveillance equipment in the office
D . Encrypt passwords for bank account information

Answer: B