http://privacyy3tsy4mge4qmg4nsid2vnhl7szzupphhkfsxvayx5tl2ztbqd.onion/cloudflare-and-signal/leak-user-location.html
Otherwise, it fetches the resource from the origin server, caches it locally, and then returns it. " So then he, First used Cloudflare WARP (Cloudflare’s VPN client), to get access to this data when normally the requests are not allowed. Second , used Burp to gather data on which signal CDN servers were being used, and control what’s sent to Signal.