Probably not as they were mentioned by name in Distant Voices (DS9).
Yup.
GARAK: Happy birthday. I know it's a few days off, but I wanted to give you your present early. It's a Cardassian holosuite programme. An adaptation of one of Shoggoth's enigma tales.
BASHIR: Is it? I see.
GARAK: You sound disappointed. I thought you enjoyed mystery novels.
BASHIR: I do. Human mystery novels. The problem with Cardassian enigma tales is that they all end the same way. All the suspects are always guilty.
GARAK: Yes, but the challenge is determining exactly who is guilty of what.