Of course, the conspiracy theorist might say that it's a bit too convenient to suppose the hitherto extremely clever criminals helpfully and stupidly copied their private keys across to computers controlled by 'the feds'. A bit like those supposedly 'random' police stopping of vehicles which turn out to be full of drugs or explosives.
Maybe public/private key pairs aren't as secure as we've been lead to believe.
Maybe public/private key pairs aren't as secure as we've been lead to believe.