Terminological remark. Conspiracy theory cannot be falsified, it is an unwarranted belief in conspiracy that cannot be disproved, because all the evidence against it is considered to be a part of the conspiracy.

There were though, historically, falsifiable theories about conspiracies (perhaps best would be to call them "conspiracy hypotheses") and they were shown to be true. These conspiracies reveal some interesting facts that can be used to disprove other theories about conspiracies, for example, how many leakers can an organization of given size expect in a certain period of time. But that's sadly not what the believers in "conspiracy theories" are doing. They are self-indulging in unfalsifiable beliefs.

And how many that didn't?