@dan @briankrebs Sounds like:
Incognito market encouraged people to use PGP. They listed public keys (never mind the issues that can come with that).

They also had a built in "encryption" feature for those who didn't want to learn how to use PGP. It would encrypt your message server side with the vendor's public key.

Anyways, I guess they were recording those messages' plaintext. Those who used PGP are fine.