Affiliate fraud in a small SaaS program is rarely sophisticated. It is usually one of two things: someone buying through their own link to pocket the commission on their own subscription, or an affiliate's coupon ending up on a deals aggregator where it converts people who were already going to buy. Neither one looks like fraud in your dashboard. Both look like growth. These are the checks worth wiring in before the program gets big enough for it to hurt. Self-referral: match o...