Even if it is already entirely broken by them, there's the question of whether they'll risk revealing that fact by going after you (publicly) c.f. Ultra[1] leve

Even if it is already entirely broken by them, there's the question of whether they'll risk revealing that fact by going after you (publicly) c.f. Ultra[1] level intelligence from breaking Enigma. [1] https://en.wikipedia.org/wiki/Ultra_%28cryptography%29#Safeguarding_of_sources https://en.wikipedia.org/wiki/Ultra_%28cryptography%29#Safeg...