Chill. It is just NSA backdoor. (joke) BTW most common "self made crypto" misconfiguration is not discarding 0 byte data .... so just scanning for that you can

Chill. It is just NSA backdoor. (joke) BTW most common "self made crypto" misconfiguration is not discarding 0 byte data .... so just scanning for that you can get at least 10 000 sites in just US.