NiceHash, a cloud mining pool, have suffered a security breach and as such, they are stopping all operations for the next 24 hours.
The nature of the breach is being investigated, but we know so far that the payment system was compromised. This lead to the contents of the NiceHash Bitcoin wallet being stolen. The exact amount of BTC that has been taken is unclear, but is estimated to be around $60 million.
NiceHash are working hard to solve this issue, along with their own investigation as well as the incident being reported to the relevant authorities as a matter of urgency. NiceHash say they are hoping to restore the service at the earliest convenience.
NiceHash said in a statement,
We understand that you will have a lot of questions, and we ask for patience and understanding while we investigate the causes and find the appropriate solutions for the future of the service. We will endeavour to update you at regular intervals.
They have recommended that all users change their online passwords, as a precaution. They have apologized for the inconvenience and are working hard to resolve it. We will post updates here as soon as know anything more.