For years, the standard defense against click fraud was simple: monitor incoming traffic, find IP addresses that click multiple times, and add them to your Google Ads exclusion list. This is the core strategy used by tools like Clickcease.
But the click fraud landscape has changed. Today, malicious actors and competitor click networks do not use static datacenter IPs. Instead, they run their operations through massive networks of rotating residential proxies.
Every single bot click is routed through a different household internet connection or mobile data tower, making traditional IP exclusion lists completely useless.
The Rise of Rotating Residential Proxies
Residential proxies are IP addresses assigned by internet service providers (ISPs) to real residential homes. Bot developers acquire these IPs by bundling proxy software inside free VPNs, browser extensions, or mobile apps that consumers install.
When a click bot targets your campaign, the script routes the request through a proxy network. Click 1 comes from a Comcast connection in Boston. Click 2 comes from a Spectrum connection in Los Angeles. Click 3 comes from an AT&T mobile device in Dallas.
To Google's network filters, this traffic looks like three entirely separate, normal consumers browsing the web, even though it is the exact same bot script executing the clicks.
Why IP Blacklisting is a Lost Battle
IP-based blockers work reactively: they detect a bad click from IP 'A', then add IP 'A' to the exclusion list. However, because the proxy rotates instantly, the bot's next click comes from IP 'B'. You pay for the click, and the blocker is always one step behind.
Furthermore, Google Ads limits campaign exclusions to 500 IP addresses. A residential proxy network can cycle through 100,000 clean IPs in a day, meaning you cannot exclude enough IPs to stop the attack.
Additionally, blocking residential IPs frequently leads to collateral damage. Since multiple households or mobile users share proxy IP ranges, you risk blocking real, high-intent customers from seeing your ads.
The Solution: Behavioral Telemetry by BotRefund
BotRefund bypasses the IP limitation entirely by focusing on the client-side environment. We do not care what IP address a visitor uses; we analyze how they interact with the page.
No matter how many times a bot rotates its IP, it cannot hide its automated browser footprint. BotRefund checks for hardware rendering anomalies, headless browser flags, simulated touch movements, and linear mouse tracks.
Because BotRefund detects the bot during the active session on your website, it logs the invalid GCLID immediately. This provides you with forensic evidence to claim refunds, regardless of IP changes.
Checklist: How to Audit Your Click Defenses
- Check if your current fraud tool is constantly hitting Google's 500 IP exclusion limit.
- Monitor if your campaigns continue to receive click spikes despite active IP blocks.
- Analyze whether your landing pages get multiple instant bounces from unique residential IPs.
- Transition to client-side behavioral auditing to monitor interaction telemetry.
- Use behavioral session logs to submit refund requests to Google Ads.
Frequently Asked Questions
Why do bots use residential proxies?
They use them to bypass basic firewalls and ad platform filters, as residential IP addresses are trusted and rarely blocklisted.
What is Google Ads' limit on IP exclusions?
Google Ads limits campaigns to 500 excluded IP addresses, which is too small to stop modern rotating proxy networks.
How does BotRefund detect bots on residential IPs?
By checking client-side details like device rendering parameters, screen layouts, mouse movements, and browser configuration properties.