they way i read it there was no "answer" but certain people were chosen as worthy and sent private email communications for further contactProbably wouldn’t be easy — and I personally would have no idea of where to start. Best bet is if the joker made the mistake of bragging about it to someone.
BUT...the entire thing is just an elaborate gag if there are only clues and no actual answer to be solved. If that’s the case, then finding the culprit would, needless to say, be easier.
they way i read it there was no "answer" but certain people were chosen as worthy and sent private email communications for further contact