Blizzard Korea has announced downtime for Diablo III's servers in Asia due to the existence of an item duplication exploit.

With the launch of the game's Real Money Auction House imminent, Blizzard is beefing up account security, requiring players to attach a Battle.net Authenticator (or Mobile Authenticator) to their account in order to add a balance to their Battle.net account.

There is no ETA currently for when service to servers in Asia will return. We'll keep you posted!

via Eurogamer.