A former classmate from your college, now the CFO of a small manufacturing company, calls you with a revelation: quot;I suspect fraud in my...

A former classmate from your college, now the CFO of a small manufacturing company, calls you with a revelation: "I suspect fraud in my company'" he states bluntly. "I'd like to conduct some technology-based fraud detection methods, but I don't know where to start. I remember you took a fraud class back in grad school - can you help me out?". Describe three methods your friend can use, listing pros and cons for each.