https://www.google.com/search?hl=en&q=ring%20selling%20data%20to%20law%20enforcement https://www.google.com/search?hl=en&q=ring%20selling%20data%... There’s a

https://www.google.com/search?hl=en&q=ring%20selling%20data%20to%20law%20enforcement https://www.google.com/search?hl=en&q=ring%20selling%20data%... There’s a USENIX paper floating around as well. Known for several years now. Wild OP is getting downvoted, this is known research for a few years.