Fortune.com reported:

Hong Kong-based digital currency exchange Bitfinex said late on Tuesday it has suspended trading on its exchange after it discovered a security breach, according to a company statement on its website…

…”We are investigating the breach to determine what happened, but we know that some of our users have had their bitcoins stolen,” the company said.”

…“We are undertaking a review to determine which users have been affected by the breach. While we conduct this initial investigation and secure our environment, bitfinex.com will be taken down and the maintenance page will be left up.”
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Read more @ http://fortune.com/2016/08/02/bitcoin-hong-kong-hack-trading-suspended/?iid=sr-link1