Paying only for results doesn’t make a program safe. It means fraud looks like results. The good news is that most affiliate fraud leaves recognizable fingerprints in data you already have.
The common patterns
- Cookie stuffing. Dropping affiliate cookies on visitors who never clicked a link, through hidden frames, pop-unders or browser extensions, then collecting commission on sales that would have happened anyway.
- Brand bidding. Buying search ads on your brand name and sending your own customers through an affiliate link. You pay twice for a customer who was already looking for you.
- Fake leads and bot traffic. Form fills from scripts or paid click farms, common in cost-per-lead programs.
- Coupon leakage. Private or influencer codes posted on coupon sites, letting the site claim sales it didn’t create.
- Self-referral. Partners buying through their own links, sometimes to collect a discount and commission together, then refunding.
- Unauthorized incentives. Paying people to click or sign up without the brand’s permission, which brings customers who leave immediately.
Warning signs in your data
| Signal | Possible cause |
|---|---|
| Very short time between click and purchase, many seconds rather than minutes | Cookie stuffing or last-second hijacking at checkout |
| High conversion rate with almost no traffic from the partner’s known site | Hidden traffic sources or brand bidding |
| Spikes of leads from one network range or device type | Bots or click farms |
| Unusually high refund rate for one partner | Self-referral or incentivized purchases |
| Sales on a private code from a partner who didn’t receive it | Coupon leakage |
Controls that work
- Clear terms that name prohibited methods, so you can reverse commissions without argument.
- A validation period long enough to catch refunds and chargebacks before payout.
- Manual review of new partners: check their site, audience and traffic sources before approval.
- Search monitoring for ads on your brand terms, with a written policy on trademark bidding.
- Code controls: unique codes per partner, expiry dates, and rules on which codes earn commission.
- Platform fraud tools. Several affiliate platforms flag suspicious click patterns, duplicate devices and impossible conversion times. Use them, and act on what they find.
Handle it fairly
Most partners are honest, and accusing one wrongly damages a relationship you worked to build. When something looks wrong, ask the partner to explain their traffic before you reverse anything, document what you found, and apply the same rules to everyone.
Worried your program is leaking money? We can review your partner mix and terms and flag where commission is going to sales you would have made anyway. Request a free program review.