By the power of truth, I, while living, have conquered the universe.
Posted by: Mythical Wolf
Posted by: sniper09208
FUD isn't cannon either. It's just an advertisement.
You're right, FUD isn't a cannon, but it certainly is canon. It's referenced by Lasky multiple times in Halo 4, the main ones that spring to mind:
"Never thought I'd see you again."
"I grew up on New Harmony, attended Corbulo Military Academy..."
(Then again, knowing you, you could just be a'trollin.)