... The alleged Russian spy ring that was arrested in the New York area in June used encryption, but one of them also left a password lying on his desk, where it was found by FBI agents who broke in.
That enabled them to decrypt hundreds of messages.(взято тут)
Какие мудрые ребята наши Штирлицы!
Действительно, зачем нарываться на терморектальный криптоанализ...