If you are planning on utilizing any of Bloodborne's online content, you'll have to put that on hold for a few days.
"We are currently conducting emergency maintenance on the game servers," says the game's official Japanese Twitter account. "The maintenance should be complete within a few days."
There's no word the exact reasoning for the intentional takedown, but lead hosting engineer of Bloodborne Tim Wernicke did shed some light on the situation. "We've received some really important feedback about an exploit and serious issues that exist in the game," says Wernicke in a Reddit comment, "we're working non-stop to get some things patched and back online."
This is some bad timing for such a serious issue to occur, considering the game's first DLC, The Old Hunters, was just made available last week. Hopefully, the issue isn't too serious and everyone can get back to gaming as soon as possible.