If the feds have located someone they know to be an encryption user, and the user continues to get any significant security advantage by using encryption, it just goes to show the feds are fucking incompetent. Most of them are. Some may not be. Unless you are running your military grade encryption algorithms in a secure compartmentalized information facility with two foot thick metal walls and constant surveillance on it, you are not getting the full advantages of military grade encryption. Short of that you could try things like keeping your laptop on you at all times and your home under surveillance to protect from hidden cameras hardware keyloggers etc, but keys and passwords and plaintexts leak so far away via so many channels (not to mention can be stolen in so many other ways) (LCD monitors can have their display reconstructed from several rooms distance away and through walls, via transient electromagnetic pulse analysis) that the only significant security benefit that encryption gives you is the ability to protect your anonymity and the ability to protect yourself from stupid attackers (ignorant to the fact that you use encryption, or ignorant to the techniques capable of stealing keys) and non-targeted attackers (someone randomly steals your laptop to pawn it)