The servers are now down for maintenance, and the attack is over. If further ones happen, we'll announce accordingly.
The DDoS attacks continue. Blizzard is rolling out updates to the backend services at a breakneck pace right now, some of which are having unintended consequences and further complicating an already messy situation. However, it should be noted that this is to be expected when combating such a large scale attack. In no way is Blizzard responsible for the server outages on this scale -- responsibility rests with the script kiddies and bot net controllers.
It's hard to know just how big this attack is, but with the sustained issues it's causing, and the severity of response from Blizzard, it's safe to assume that it's big. Battle.net is a hardened internet service that has withstood onslaughts like this before. For it to fail at such a critical juncture is nothing but catastrophic for the short term, and could have serious long term implications. We have some idea, shown above, of just how global this attack is.
We'll update this post as the night continues, providing you with the latest. In the mean time -- we recommend you catch up on your lore, and not concern yourself with logging in.
Blizzard also issued the following updated statement at 8:00 pm PST this evening:
Updated by Adam Holisky. Original post follows after the break.