Oh my god...
Sure graymines pool uses coinhive.

BUT;

1) it's written in www footer
2) only 1 CPU core so where do you came to conclusion of "exploiting"?
3) you can check your balance or whatever on www and just close browser tab, didn't you know that? :-)
4)i've made non-profitable service to work for months for miners, so maybe thank me for it...?

And what you did meanwhile with your life? :-D