Click contamination watchlist
Domains that produced implausible remnant click rates on our flights. msn.com repeated. Seven domains held 41.3 percent of Supply Bench clicks. Not a certified IVT list.
Published 2026-09-09 · Search job: click fraud display ads domains
Last measured: 2026-09-02 Supply Bench pull (August 2026 waves, partial coverage) plus the July 2026 learning-flight placement scan for the msn.com repeat. This is a watchlist from our books. It is not a vendor IVT verdict and not a public blocklist you should paste into another seat without looking.
The 1 percent and 3 percent CTR flags we use to notice contamination are operator judgment, not a certified fraud threshold.
The seven-domain set (Supply Bench slice)
Together these seven domains produced 41.3 percent of clicks from 4.7 percent of impressions in the 2026-09-02 pull. Flight-average CTR in that writeup was about 0.28 percent.
| Domain | What we measured | Why it is on the list |
|---|---|---|
| people.com | 144 impressions, 23 clicks, 15.97 percent CTR | Physically implausible for a 300x250 against that flight average |
| msn.com | 785 impressions, 42 clicks, 5.35 percent CTR | Repeat offender (see below) |
| booksandbao.com | 3.82 percent CTR | Same implausible-CTR signature |
| wheelofnames.com | 2.29 percent CTR | Browser utility inventory on a web-only filter |
| tftcomps.gg | 2.17 percent CTR | Browser game/utility inventory |
| worldofsolitaire.com | 1.10 percent CTR | Browser game inventory |
| worldlifestyle.com | 1.08 percent CTR | Same signature at a lower rate |
Do not treat the 41.3 percent share as "all fraud." Treat it as "the billed click column is contaminated enough that CTR and CPC are not the score."
msn.com is a repeat
The July 2026 placement scan on the earlier learning flight already flagged msn.com at about 3.7 percent CTR against a 0.15 percent flight average. Supply Bench saw it again at 5.35 percent. Same domain, same signature, second flight. That is why this page is recurring: a one-off domain can be luck. A repeat is a pattern we keep listing until a judged exclude or a measured IVT rate replaces the CTR flag.
Limits
Partial coverage: top spend slice only. Wave 1 on-page logger failures mean some waves lack visit proof. No IVT vendor. Web-only targeting held (app_agg was empty) and still bought browser games.
When we have a covered Supply Audit run or a visit join by offer, we will add rows or strike names with a dated note. We will not silently drop msn.com because a later week looked quieter.
Related Lab: seven domains produced two fifths of the clicks. Readout procedure: supply-quality readout checklist.