The Google Display Network (GDN) allows advertisers to place banner ads across millions of partner websites. While this offers wide reach, it is also highly susceptible to **publisher click fraud**.
Because website owners earn a share of the CPC revenue for every click on their ads, they are incentivized to generate clicks on their pages.
While Google has systems in place to filter out invalid traffic, sophisticated publishers use automated scripts to click display ads, inflating their payouts and charging your account. Here is how to protect your budget.
The Mechanics of Publisher Click Fraud
Publisher click fraud is typically driven by automated scripts running on partner websites. The publisher configures the site to load your display ad, and a script automatically triggers a click event.
To avoid detection by Google's security systems, they route traffic through residential proxy networks or rotate mobile device identifiers.
Each click appears to come from a separate consumer, charging your account and wasting your daily ad budget.
Why Standard Placement Exclusions Fail
Many marketers try to solve this by manually adding low-performing sites to their Google Ads placement exclusion list.
However, this is ineffective because new partner sites join the display network daily, making it impossible to exclude them all manually.
Additionally, publishers create networks of related domains to rotate traffic, ensuring that as soon as one site is excluded, another takes its place.
How BotRefund Exposes Publisher Fraud
BotRefund protects your display ads by auditing visitor telemetry on your landing pages.
Our script monitors rendering parameters and browser configurations. If a click from a display partner site shows no mouse movements, lacks normal hardware fonts, or utilizes a headless browser, BotRefund flags the session as invalid.
BotRefund compiles these logs into an audit report. You can use this report to prove to your Google Ads representative that specific display partner placements are driving fraudulent traffic, securing refunds.
Checklist: How to Protect Display Ad Budgets
- Monitor placement-level reporting in your Google Display campaigns.
- Exclude mobile app categories if they drive high clicks with zero conversions.
- Look for click events that register zero scroll activity or viewport interaction.
- Install BotRefund to monitor behavioral telemetry on all landing pages.
- Submit placement audit reports to Google support to request ad credits.
Frequently Asked Questions
Why is the Google Display Network susceptible to click fraud?
Because publishers are paid for every click on ads hosted on their sites, creating a financial incentive to generate clicks.
Can I exclude mobile apps from my display campaigns?
Yes. You can use placement exclusions to opt-out of mobile app categories in your Google Ads campaign settings.
How does BotRefund detect publisher click scripts?
By checking client-side details like device rendering parameters, screen layouts, mouse movements, and browser configuration properties.