@johnfn I think i can say something about Nicehash. I got a message from them that they got hacked but they told everybody: after a short time they will give people their satoshis which got stolen back. Everybody which had a higher balance than 100000 Satoshis are getting them back. Everyone with a balance less unfortunately lost them. I still think Nicehash is a good provider even though im mining always directly in the currencies.