Coupon and cashback extensions sit in your customer's browser and wake up on your checkout page. They fire an affiliate link in the background, replace whatever tracking was there, and claim the commission for a sale that was already complete. Nothing about it appears in your analytics — the order still converts, it just costs more.
The whole sequence runs in the background of a tab the customer already has open, in the seconds between reaching the basket and paying.
It matches the domain against its own list of merchants and knows a commission is available.
Some show a coupon popup. Many fire silently, with no visible interaction from the customer.
A hidden request passes through the network's tracking domain and writes a fresh cookie.
The order closes. The commission goes to the extension instead of the channel that actually earned it.
Nothing fails. The customer converts, the basket value is right, the order lands in your system. The only thing that changed is which partner gets paid — and in your affiliate report that partner looks like a high performer with an outstanding conversion rate.
This is also why the problem grows quietly: the better an extension is at last-click injection, the better its numbers look, and the more budget it attracts.
Detecting this needs a real browser with the real extension installed, going through a real checkout. That is exactly what our infrastructure does, continuously.
The major coupon, cashback and shopping extensions are installed in instrumented browsers and driven through your funnel on a schedule.
We capture the full redirect chain the extension triggers, including the network, the partner ID and the cookie that gets written.
Alongside the extensions themselves we track the coupon and deal sites that feed them, including codes that were never meant to be public.
Each case arrives with screenshots, timestamps and the technical chain — enough for a network to reverse the commission or terminate the partner.
We will test your funnel with the extensions your customers actually have installed and show you exactly what fires.
Tell us what this is about and we'll come back to you. We only need a company email address to reply to.