The drops are 50% designed to scare the players into poor moves, allowing white hats to trace, track and get evidence of their crimes.
Just enjoy the show.
How do you obscure a message?
Encode it? Encrypt it?
Or just leave it in plain sight?
How do you put something in plain sight and have it ignored by nearly all?
How could the message be instantly dismissed as "fake"?
Bold tripcode?