Chinese OKCoin's Bitcoin exchange OKEx reported allegedly hacked for $3m. It's still unclear whether the information is trustworthy, as the data provided by the official company's Twitter does not match the data from the users and the top crypto magazines.
Thus, as reported by cointelegraph.com, a user reported that his OKEx account was logged in by a German IP and participated in BTC-ETC trading. The hacker sold all the Bitcoins and canceled all the pending orders within one hour. Such behavior has resulted in a loss of 200 Bitcoins, which worth more than five mln yuan (about 750,000 dollars). A few other users reported similar attacks. As detailed, all victims have lost about six hundred Bitcoins in total, worth over 20 mln yuan (about three mln dollars).
However, OKEx claims that the exchange hasn't been hacked.
No. OKEx was NOT being hacked. Yet several users got password stolen. That's why we issued a reminder for all uses to properly protect their password and a guideline on google 2FA. https://t.co/L5Rv9mkHuT
— OKEx (@OKEx_) October 2, 2017
Thus, the company argues that the hack has not occurred, yet "several users passwords were stolen". OKEx just gives some recommendations for improving security.
The situation is still pretty unclear, so we'll keep you updated.