We recieved a curious e-mail from Halo-Net just recently. It included only this:

I must be quick as they're after me.I found this data left at the location.I hope you can make use of it...796F757220616374696F6E73206172652066
6F6F6C6973682E207768617420796F752068
61766520646F6E652077696C6C2063617573
6520737566666572696E6720756E746F2074
68652067616C6178792E206265207761726E
656420796F75722069646C656E6573732069
7320796F7572207765616B6E657373

Ironically, I'd visited just the day before and had been greeted with only an image of the 'Hog; no previous warning that Halo-Net might return to the land of the living. The same hexcode is also displayed if you click on their current teaser image. HBO has already translated it into English:

your actions are foolish. what you have done will cause suffering unto the galaxy. be warned your idleness is your weakness.