Hidden scrub shows up as a stable ~8% conversion gap
Scrub = silently withheld conversions. Detected by comparing your tracker postbacks to network-reported conversions.
— Honest variance from attribution lag: ±2–3%
— Persistent one-directional gap: scrub signal
— Sampled flag threshold: gap >5% sustained 14+ days
In the sample, 6 of 31 networks showed a stable gap above 5% (n=31). Random attribution noise reverses direction day to day; scrub does not.
Read: a one-directional gap that never flips toward your numbers is the tell.
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Hidden scrub shows up as a stable ~8% conversion gap
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