 This is how an ad can end up in a fraudulent placement. You have an advertiser that has an online campaign that's getting distribution through a platform. They buy that space within the platform, set up their targeting parameters, and in real time there will be placements in that platform making bid requests. They'll come from good and bad players. If the parameters associated with these bid requests align with what the campaign's targeting objectives are, the platform will select which placements to deliver the ad and they will return it and it could go to a good site or bad site placement that matches up with the campaign objectives. Unfortunately it ends up in bad locations at times and you won't find out until after the campaign has delivered and you have poor results or you find through analysis that the placement was not legitimate. In an ideal scenario your platform will have tools in place that identify these bad players on the upfront so that no bid request is ever received and there's no distribution of your ad to the bad player.