Came across a site, which tried to upload Trojan to my PC. It turned out it was using my capacities for mining while I was at the site. What do you know about such sites? Do they do any harm to PCs? And is it profitable to mine by such means?
Not surprising and been a couple of these incidents lately already. They're all mining Monero, pretty sure through Coinhive with the infected computer's hardware. Not sure how much they've managed to rake in, though.
If your computer slows down and starts overheating when you visit a site, it's best to install an antivirus to check things out.