The Akamai rule that stops running when you add .css
I was hunting on a private YesWeHack program and I kept hitting the same wall. Not a hardened application, a 403: 461 bytes of HTML, server: AkamaiGHost, back in forty milliseconds. Whenever I got close to something the edge ate the request before the origin saw it. Three separate leads died that way across two sessions, and after the third one I stopped treating it as bad luck.