Pop / Pop-under inventory carries an elevated invalid-traffic baseline — a long tail of third-party sub-sources where bots and arbitrage concentrate. ValidVisit judges every visit per source, so the bad ones have an address.
Pick a network for its invalid-share breakdown, tracking tokens and the exact exclusion you can take.
Pop and pop-under inventory is forced-view by design: the ad opens in a window the visitor didn’t request, so even genuine human sessions arrive with near-zero intent. That makes the channel cheap and high-volume — and it carries one of the highest invalid-traffic baselines of any format, which is exactly why a per-visit verdict matters most here.
Two distinct problems sit inside pop inventory:
The distinction matters because the remedy differs: a bot-heavy source warrants dropping, while a low-intent human source may simply warrant a lower bid. Both concentrate at the source/zone level.
Network-origin signals do the heavy lifting on pop, where volume is high: server-farm and proxy traffic is identified early, and the broader origin-and-device pattern exposes scripted HTTP clients and modified browser builds standing in for real visitors. Behaviour and engagement entropy then separate involuntary-but-human sessions from automation — so the two failure modes are labelled differently rather than lumped together.
ValidVisit rolls the invalid share up by the network’s source or zone id. Given the format’s baseline, the goal isn’t to expect valid traffic everywhere — it’s to rank sources by invalid share so budget moves toward the ones delivering real, engaged humans. ValidVisit reports that ranking; the buying decisions stay yours.
Scoring works the same way on every pop / pop-under network, and ValidVisit only reports: you make each exclusion in the network yourself. How the verdict works →
No — but it has a high invalid-traffic baseline, so it has to be measured rather than assumed. Sources vary widely: some are mostly automated, some deliver involuntary-but-real humans, and a few perform. A per-source invalid share is what separates them; a campaign average tells you nothing useful here.
Bots stand out on network origin (server-farm or proxy traffic) and on automated browsers that admit what they are. A low-intent human passes those checks and is judged Valid; that traffic shows up as a source whose visitors never engage or convert, not as an Invalid verdict. The verdict, built from 100+ data points with its evidence, distinguishes the two — because the right response to each is different.
See which publishers and placements send real buyers vs bots — every visit judged Valid or Invalid, worst first.
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