Black holing is a no-no unless your desperate. As it says, it drops both good and bad traffic.
I'm sure we already have an intrusion detection system, we do in-game to a point, but I'm not the host here.
I am more than certain that Majkp has the server set properly.
Over provisioning I believe is an ISP thing, the server's ISP wasn't prepared if I read right, so thats not our fault. But that kind of hosting anywhere is expensive. You'd need donations constantly to keep that up.
As in the conclusion, business servers survive better in average compared to people hosting their own servers for free.
Discovery will never, ever be immune. Why? Its a game server run by a community, not a subscriber base like say Runescape or WoW.