There was a faulty contract in Parity's multi-sig wallet, which is more like a vault than a typical wallet. The page linked to here is the blockchain address o

There was a faulty contract in Parity's multi-sig wallet, which is more like a vault than a typical wallet. The page linked to here is the blockchain address of whoever exploited that fault and was able to take control of a large number of wallets and forward all of the ETH to their account. They've sold ~20 ETH so far (~4100 USD), and have ~150,000 sitting at that address still.