Well, if I were a client of Mossack Fonseca I'd be demanding a refund right now.
Security, yes we've heard of it.
If I ever should get into serious legal trouble I guess I'd try to explain a thing or several to my lawyer about security, talk to their IT guy(s) (assuming they have one) and insist on a method of communication that is safe-ish - let's face it, that's the best I could realistically hope for. Also, poking around the other guy's lawyer's IT might be an option to consider.
Biting the hand that feeds IT
