It remains to be seen how many of these cases will hold up in the courts of the various countries involved, given the possibility that this could be interpreted as a massive, warrantless violation of privacy rights. Unless the prosecutors can prove that all users of the software were necessarily using it for criminal purposes, then shouldn't the inclusion of a backdoor which collects everything everybody says and sends it to the police be an enormous rights breach? These will not be slam-dunk prosecutions, that's for sure.