Hidden/stacked/covered or otherwise intentionally obfuscated ad serving

'When multiple ads are delivered to the same page or app but are intentionally hidden e.g. impossible for the user to see them - they are considered invalid ads.'


Classification Sophisticated Invalid Traffic

TrafficGuard Indicators

Registering multiple clicks from the same user at the same time on multiple campaigns

Some fraudsters split this traffic over campaigns from different networks to evade detection. In these cases, time to install will have a flat distribution

Rejection Codes




Fraud Tactics

Ad Stacking

Pixel Stuffing


Source: TrafficGuard Glossary