Ideally auditors verify information for factual content. It is a demanding profession, requiring great attention to detail. Auditors are necessary in both the financial and insurance industries. I will have an auditor in my office Monday to verify my payroll records because that is the basis for my company's Workmans Compensation Insurance premiums. Without an audit I could have stated any payroll I wanted just to keep my premiums at a minimum. I guess you could say auditors are like door locks, they keep honest people honest.
Auditors make sure that companies and people play by the book when it comes to balancing the books . They are like a financial cop.