Ghostery Verified Domains hinges on Ghostrank (a tracker that users of the Ghostery browser app can opt in to) and IPONWEB’s BidSwitch, designed to enable interoperability between different ad platforms.
Ghostery reports 20 million real people have activated Ghostrank. The Verified Domains service cross-references the ad scripts those individuals load with the 20 billion daily bids filtering through BidSwitch. Through this process, Verified Domains can determine if “what the sell side says they’re offering is what the buy side delivered,” McMaster said.
A pilot test showed that up to 40% of paid impressions fell into the suspicious or masked categories.
While the service was designed for advertisers, Meyer sees it as a “net positive” for publishers, too. “Right now there is a fraud discount baked into every bid because brands don’t trust the ecosystem.”
One example is with masked domains. A legitimate publisher with multiple sites may use masking to sell inventory under the umbrella company, for example. But when masking happens, Meyer says that there is usually less bang for the advertiser’s buck.
“Let’s say you have four or five different SSPs masking a piece of inventory that’s not hard to get access to. You might find that you bought a ton of inventory you didn’t need," Meyer said. “Not every piece is fraudulent in that it’s a bot, but the advertiser isn’t getting the value it thinks.”