Protecting one’s own reputation and livelihood—whether protecting it against lies, against opinions, or against the truth—is likely high on many people’s willing-to-lie-for lists. Making money is, too. Yet though I don’t think of myself as naïve on this score, the sheer magnitude and brazenness of these schemes surprised me. My sense is that it surprised many of my colleagues. Perhaps it surprised you. And this reminder of just how common fraud can be might help keep us alert to shenanigans in many other fields as well— and might help us design systems that deal better with such risks.