Proven Tactics to Stop Click Fraud in Google Ads

Written by
Melih Yonsel
Published on
May 7, 2025

Click fraud drains budgets, skews data and kills return on ad spend (ROAS). Google has a strong financial motive to filter bad clicks—every wasted dollar is a dollar you might stop spending. Yet the system is not fully transparent, so scepticism and conspiracy theories are common.

This article shows exactly what you can do to protect campaigns while Google does its part. Each tactic is field‑tested across e‑commerce, lead‑gen and SaaS accounts.

What Counts as Click Fraud?

Click fraud is any intentional, non‑genuine click aimed at running down your budget—whether by competitors, bots or click farms. Signs include sudden spikes in CTR without sales, clusters of clicks from the same IP, and repeated zero‑second sessions.

How Google Fights Fraud Behind the Scenes

Google’s real‑time filtering blocks most invalid traffic before you pay. A second layer reviews clicks after the fact and credits back suspicious ones. According to the 2024 Ads Safety Report, Google blocked 5.5 billion invalid ads and returned “hundreds of millions of dollars” in credits.

Key point: Google needs to keep fraud low to protect advertiser trust and long‑term revenue. The problem is visibility—the filters are a black box, so you still need your own safeguards.

Tactic #1 – Use Location & Language PINs

  • Switch from “Presence or interest” to “Presence” targeting.
  • Narrow radius bids (city > region > country).
  • Remove languages you don’t serve.

This cuts generic bot traffic that targets broad‑match keywords worldwide.

Tactic #2 – Add Frequency & Device Rules

Set automated rules:

  • Pause display placements where a single user ID shows 5+ impressions without clicks.
  • Lower bids on devices with anomalous bounce rates (e.g., old Android versions popular in click farms).

Tactic #3 – Enable Google Analytics Anomaly Alerts

GA4’s custom Insights can trigger email/slack alerts when:

  • Sessions spike > 150 % hour‑over‑hour.
  • Average session duration drops below 3 seconds. Action within minutes saves budget.

Tactic #4 – Deploy Third‑Party Fraud Filters

Tools like ClickCease, Lunio, CHEQ, PPC Protect, Fraud Blocker, AdTector, ClickPatrol or Clixtell can monitor every click in real time and push suspect IPs or device fingerprints straight back into Google Ads. Take advantage of their trial periods to compare blocked clicks versus extra cost before committing.

Tactic #5 – Monitor Placement Reports Weekly

  • Display → Where ads showed → filter: cost > £10, conversions = 0.
  • Exclude mobile apps or MFA (Made‑for‑Ads) sites with poor quality.
  • Keep a negative placement list synced to all display campaigns.

Tactic #6 – Automate Refund Claims with Scripts

Google can miss some fraud. The Invalid Clicks Refund Script (open‑source) flags suspicious clicks, compiles evidence and pre‑drafts a support ticket. Average refund win rate in our tests: 18 % of wasted spend.

24‑Hour Response Playbook

Timeframe Action Owner
0–2 hrs GA4 anomaly alert fires → pause affected campaigns or ad groups PPC Specialist
2–6 hrs Pull placement / device / location reports → identify fraud source → apply negative placements, app exclusions or device bid cuts Data Analyst
6–12 hrs Gather click logs & third‑party tool evidence → submit refund request via Google support or script Account Manager
12–24 hrs Resume healthy campaigns, adjust budgets, and report cost savings & next‑step actions to client Strategist

Key Takeaways

  • Google does fight fraud, but its filters are invisible to you—layer your own defences.
  • Combine manual checks (IP, placement, analytics) with automated tools and scripts.
  • Act fast: most savings happen within the first 24 hours of an attack.

Want a Free Fraud Audit?

Book a 20‑minute call and get a custom fraud‑risk heatmap for your account.

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