You may have noticed that certain websites put significant load on your CPU and slow it down. Aside from the possibility that you may not have the best hardware, the slowdown could be due to a JavaScript miner embedded in the website. Instead of getting bombarded with annoying ads, you may now be getting an ad-free experience while unknowingly lending your computing resources to help mine cryptocurrency—in this case Monero, a privacy-focused alternative to the ever-popular Bitcoin.