Corporate Fraud is an unfortunate, costly and seemingly never-ending aspect of the world of business. In the best case, fraud is prevented or, at least caught before harm is done. All too often, however, these cases of deception lead to large financial losses, impacting the lives of many - shareholders, individuals and certainly those that are courageous whistleblowers. A little more than 15 years after the unwind of the Madoff Ponzi scheme, I invited Harry Markopolos back to the Alpha Exchange. Harry is often simply referred to as “the Man Who Knew”. He chased Madoff for years, serving up a comprehensive slew of evidence to the SEC that was mind boggling in its degree of logic, rigor and scope. Our conversation looks back on the lessons of this Ponzi scheme and also zooms out to consider other examples of corporate fraud including Theranos and FTX. Throughout our discussion I seek to gather Harry’s insights on the commonalities in these cases, how to detect them and also, importantly, how to prevent fraud. He points to a few areas of progress on the enforcement front but makes a strong case that the penalties associated with being caught need to be considerably larger. I hope you enjoy this episode of the Alpha Exchange, my conversation with Harry Markopolos.