Key takeaways
- Not every irrelevant click is fraudulent.
- Search term and location hygiene belongs beside fraud analysis.
- Keyword-level patterns need enough eligible traffic to be comparable.
- Spend impact requires explicit currency, time, and attribution definitions.
Separate acquisition quality from suspected fraud
Paid search can underperform because of query mismatch, broad targeting, weak creative alignment, broken landing pages, or conversion measurement errors. Resolve these ordinary causes first so the remaining investigation is narrower and more credible.
Campaign, ad group, keyword, search term, device, location, schedule, and landing page are useful analytical dimensions. They should be compared only when definitions and coverage are compatible.
Connect paid clicks to site evidence
Preserve click identifiers and campaign parameters, then link them to eligible measured sessions. Evaluate velocity, network, device, behaviour, identity continuity, navigation, and outcomes as separate signal families.
- Expose missing-tag and consent-related gaps.
- Use confidence thresholds and an unclassified state.
- Avoid multiplying a risk score by spend as though it were probability.
- Keep provider-reported and independently estimated values distinct.
Close the loop carefully
If a provider supports an exclusion or other action, document target, scope, reason, approval, attempted state, applied state, verification, expiry, and reversal. Monitor legitimate traffic after the change to identify collateral impact.
Limitations
What this guide does not claim
The right controls vary by search network and campaign type. This framework does not imply that every network exposes the same actions or that all suspicious spend is recoverable.
Evidence
Primary sources
- About invalid trafficGoogle Ads Help
- Invalid clicks: definitionGoogle Ads Help
- Clicks and sessions discrepancy troubleshootingGoogle Ads Help
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