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As part of PubMatic’s commitment to provide a fraud-free marketplace for media buyers, we continue to vigilantly identify and address sources of suspicious activity to ensure that our partners have complete peace of mind when transacting on our platform. In addition to immediately removing bad actors upon detection, we’ve also decided to share our findings with partners in hopes of driving an industry-wide effort to clean up the supply chain via regular monthly bulletins. Due to these continued efforts, PubMatic achieved a ~98% fraud-free score for the month of NovemberDecember.

With that said, the publisher/domain mappings that we’ve flagged and removed through our inventory clean-up efforts during the month of November are listed in the attached spreadsheet below. Important to note, the end domain may have been innocuous and rather that specific channel to the domain originated the suspicious activity. Actual bidding exposure was immaterial as we immediately removed the mapping from our active inventory footprint.  We’re sharing this data to provide our partners complete transparency on our actions to improve inventory quality at PubMatic and the supply ecosystem as a whole.