Ad fraud
In short
Deliberate deception that generates or misrepresents advertising activity to obtain money or other unfair benefit.
Ad fraud involves deliberate deception in advertising activity. Examples include fabricated clicks, automated traffic presented as real interest, or manipulated placements intended to generate charges without a genuine advertising opportunity.
Fraud and invalid traffic are different categories
Invalid traffic is broader than fraud. An accidental click or a duplicate interaction can be invalid without being intentionally deceptive. Google explicitly includes accidental, automated, and deliberately manipulative activity in its invalid-traffic guidance.
This distinction matters when investigating results. A sudden increase in clicks, low conversion rate, or unusual location pattern is a reason to investigate. It is not sufficient evidence by itself to identify fraud.
Platforms use detection and filtering systems, and some provide adjustments or credits for activity they identify as invalid. Their reporting should be checked alongside the advertiser’s own measurement.
Illustrative example
A retailer sees a sharp traffic increase from a placement without corresponding product engagement. It compares dates, placement reports, conversion tracking health, and the platform’s invalid-traffic information before requesting an investigation.
The example deliberately leaves the conclusion open. A broken landing page or a tracking error could also explain weak results. Preserve the relevant evidence and distinguish confirmed invalid activity from a hypothesis; otherwise a campaign change may address the wrong cause.