I need this question answered in 1 hour. The attachment is the question that needs to be answered. All of the information is there.

The owner of a small family-owned business currently prepares his own payroll manually but he is considering switching to an AIS. He is skeptical about the security of the information and asked you to educate him about the types of unauthorized changes to payroll data, and explain at least two controls that would maintain the integrity of the payroll master file