I don't want to be mean to him, clearly David is as human as the rest of us i.e. periods of mediocrity, occasional moments of brilliant clarity shot through with the disease of monstrous error. But you'd think the Director of the fucking Central Intelligence Agency would know how to cover his tracks and certainly how to encrypt his emails. So I believe it was fitting that he should be removed from office. Not because of infidelity, but because he didn't belong to whatever the government's equivalent of our darknet club is.If there is any military commander or intelligence chief who doesn't grasp the necessity of encrypting ALL communications, then they deserve to be made redundant. They are a threat to the security model, even to the country itself, no matter how hardworking or sophisticated they are in other areas.For what it is worth he probably did know how to encrypt email, but he chose not to do so. He chose to use plaintext and Gmail accounts with fake nyms. So he was aware of the danger and he used security by obscurity. Let that be a lesson to everybody. Encrypt email everyday. It is your final defense against interception.Join PGP Club.P.S. Any credible intelligence agency with an exploit for access to Gmail's servers (think the Russian/Chinese equivalent of Flame) could have run stegnograhic pattern matching algorithms and used public information written by the Director to find his 'secret' communications. Not specifically for David Petraeus probably, for any figures of note within the US government. This is not rocket science, if Pine has thought of it then it's probably already being done. So yes, the potential for blackmail is real and you should treat public email services, let alone Facebook, as the informational equivalent of a public toilet.