How cheap click fraud swallows your affiliate budget

Affiliate marketing is one of the most measurable advertising channels there is. You only pay once there is a click, a lead or a sale. In theory. In practice a quiet cost item creeps into many advertisers' budgets: fraud.

Not the spectacular hacker attack, but everyday, systematic fraud by publishers who earn more by cheating than by delivering honest traffic. In this article we explain which forms are most common, how to recognise them, and what Klatsa does to keep them out.

The three most common forms of affiliate fraud

1. Click fraud

The best-known variant. A publisher sends artificial clicks to your landing page, through bots, click farms or their own staff clicking the same link for hours. The aim: collect commission without any real intent to buy ever being behind it.

What it looks like in your data:

• An explosively high click-to-conversion ratio of zero. Thousands of clicks, not a single sale.
• Extremely short session duration (under 2 seconds), high bounce rate.
• Clicks concentrated on a small number of IP addresses or the same ASN (autonomous network block).
• Traffic from a geography that does not match the publisher's target market.

2. View fraud and impression fraud

Less visible but just as damaging in CPM or CPL models. Publishers report impressions or leads that never really happened, generated by scripts that simulate ad requests or fill in forms automatically.

What it looks like in your data:

• Lead numbers that do not show up in your own CRM or order history.
• Form submissions with identical user agent strings or uncommon browser fingerprints.
• Leads who, when called, say they have never heard of the brand.

3. Cookie stuffing

The most cunning form. The publisher quietly places an affiliate cookie in the browser of visitors who never deliberately clicked on anything, for instance through a hidden iframe, a piggyback pixel or a misleading redirect link. If that visitor later buys through another channel, the fraudulent publisher claims the commission.

What it looks like in your data:

• Commission attributed to publishers who were never part of the customer journey.
• Last-click referrers showing affiliate tracking domains, while the visitor remembers no click.
• Conversions claimed by publishers in niches that have nothing to do with your product.

What it costs you to do nothing

An affiliate network that does not actively fight fraud ends up serving as a conduit for your media budget to dishonest parties. The damage is twofold.

Direct costs: commission paid out for fake clicks or stolen attribution. On large campaigns this can amount to 10 to 30% of the total affiliate budget without you seeing it directly.

Indirect costs: you optimise your campaigns on polluted data. You draw the wrong conclusions, "publisher X converts badly", while the real problem is that publisher Y is stealing the commission for traffic publisher X generated. So you make structurally poor budget decisions.

How Klatsa screens publishers

Klatsa works exclusively with manually approved publishers. That sounds simple, but in concrete terms it means:

Before admission:

• Every publisher application is assessed by hand. We look at the platform, the audience, the traffic channels and past performance.
• Publishers must be able to show an active website, app or newsletter, not an anonymous bulk traffic source.
• We check for previously reported fraud through external signal lists.

During the campaign:

• Klatsa monitors click patterns and automatically flags anomalies: unusual click velocity, IP concentration, and conversion rates far outside the average.
• Suspect publishers are temporarily suspended pending a manual review.
• Where fraud is confirmed, the publisher is permanently blocked and the corresponding commissions are not paid out.

For advertisers:

• Transparent reporting: you see the click volume, conversion rate and commission cost per publisher.
• Integration verification through our test order flow, so that we know for certain that conversions are recorded correctly before a campaign goes live.

The bottom line

No network can eliminate fraud entirely, and it would be dishonest to claim otherwise. But the difference between a network that actively screens and a network that merely passes things through is the difference between the occasional fraudster who is caught quickly and an ecosystem in which fraud structurally pays.

At Klatsa we deliberately choose fewer, better publishers over maximum scale. That costs a little more time up front, but it protects your budget in the long run.

Want to know how your current affiliate mix looks in terms of fraud risk? Get in touch, we are happy to take a look with you.