6 Types of Ad Fraud Every Advertiser Should Recognise

By Adsonmarket Editorial Team ·

Bots blocked by a security shield representing ad fraud prevention

Ad fraud is not one problem but several schemes that look different in your reports. Recognising the pattern is the first step to stopping the spend.

The six schemes

Each leaves a different footprint.

  • Bot traffic — automated views and clicks
  • Click farms — paid humans clicking
  • Domain spoofing — cheap sites pretending to be premium
  • Ad stacking — many ads layered in one slot
  • Pixel stuffing — ads shrunk to 1×1
  • Cookie stuffing — fake attribution

Signals in your reports

High CTR with zero conversions, traffic at odd hours, and placements you don't recognise.

Protection

Use networks that review publishers, block poor placements and track conversions, not just clicks.

Example

A suspicious placement

One placement delivered 40% of a campaign's clicks but no sign-ups. Excluding it cut cost per sign-up by a third.

Step-by-step

  1. Report by placement weekly
  2. Flag high CTR / no conversion sources
  3. Exclude them
  4. Request refunds for confirmed invalid traffic

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