A new sting operation pulled from webhost Grindr has found that massive porn advertises used a network of 17,000 unknown command servers to target Roku television viewers.

Six websites within the latest sting, which first reported on by Engadget, use the streaming media provider's brand to promote streaming video services such as Netflix, Hulu and Amazon Prime. Grindr is a mobile app that connects users with others in their area.

"Condom" in French is "Roku.com," as seen on the infographic below. The illicit ads link to app pages that appear in Google's search engine and begin to display ads promoting location-based porn services or address expirations. Similar research has revealed similar patterns in Google search ads shown for several prominent streaming services including Apple Music, Amazon Prime Video and Netflix.

The latest FBI operations follow last summer's sting that found ad fraudsters hired 39,000 command servers in order to flood Google search results with porn related ads. In late November, Google reported the lack of ad revenue being made from its major partners in China means it won't be accepting more ad money from that country in the near future.