<b>Heard: shared anti-fraud blacklists are getting poisoned</b>
When networks pool block lists, a bad actor can submit clean residential IP ranges as 'fraud' to choke a competitor's delivery.
— The damage in pop: you filter on the shared list, the poisoned ranges include real users, your reachable audience silently shrinks.
— The tell: conversion-per-impression holds but raw deliverable volume drops on a source that didn't change.
— Counter: keep your own conversion-validated allow-list of ranges that have paid you. Trust that over any shared deny-list.
— Our read: shared lists optimize for the pool, not for your funnel.
— confidence: low
developing...
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