Accidently I found a site that through the use of javascripts, it leeches my cpu and it won't stop until the pc is restarted. I don't know if it's considered malware or something like that but I don't think that leeching cpu power without authorization is a good thing. This is the page that I was browsing when the cpu started running for no reason, I didn't install or click anything, just browsing the site (I used paint to write the link because I don't want to cause troubles to anyone):


Something like this might generate a huge botnet, I think.. but I'm not an expert, so if you think that there's no risk then you can remove this post, sorry.