Im not exactly sure if I understand the question correctly, but the difficulty rising has always been a thing - Just because now it is more prominent doesn't mean that it is anything more or less significant.
I dont know that this really means that miners got "hacked"
But if you are referring to Nicehash, you may want to read more on their business model, as it was simply a marketplace to sell hash instead of mining
Yes, I think thats what Iam reffering too. Sorry for the misunderstanding I edit the subject is it in right term for question? In this thread I made. I cant really exactly say I just read this a few days or weeks ago, so I cant really explain but thank for understanding me.
Honestly i'm not using nicehash, I was mining ethereum but i am using claymore script dual mining if you are referring to nicehash comparing to mine real coins not auto convert or autotune like nicehash honestly is not paying high compare mining altcoin and wait for the price high before you sell them.
If you wanted to get more answer about your question i think much better to move this thread in altcoin mining section.