There is a new official announcement on the NiceHash page. In short:

The support we have received from our community during this crisis has been immense. We are truly moved by the tens of thousands of messages from our community of miners. We understand why everyone is upset, and we are truly sorry.

We want you to start earning money again as soon as possible. We are taking all the necessary steps to re-establish our systems with the highest possible levels of security to contain and defeat any possible future attacks.

Although we initially stopped the service for 24 hours, it turned out we require more time. Good news is that we are in the final stages of a rebuilding NiceHash into the most robust and secure marketplace for hashing power.

Your bitcoins were stolen and we are working with international law enforcement agencies to identify the attackers and recover the stolen funds. We understand it may take some time and we are working on a solution for all users that were affected.

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Second, much more interesting news in my mind, is that the exit address is known now.

1EnJHhq8Jq8vDuZA5ahVh6H4t6jh1mB4rq

On December 6th 2017 this fresh address suddenly got 4,655.25349748 BTC in nice round chunks at regular intervals

It remained untouched until today when 664.24705633 BTC were transferred elsewhere.

It is very interesting how the initial filling of this address could be so regular and uninterrupted by any measures from the NiceHash platform. If this address is the one of the steal, of course. It sure looks like it is the right one.

Read more in depth review here.

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NiceHash Saga So Far

Previous articles:

NiceHash In Major Slovenian Newspapers
NiceHash Security Breach - Video Update From NiceHash Team
NiceHash Service Unavailable - Security Breach - NiceHash Bitcoin Wallet Empty