Source: Chris Hoffman, HowToGeek.com, November 28, 2017
Cryptocurrency miners are a new scourge on the web.
Web pages can now embed JavaScript code that runs in your web browser to mine themselves Bitcoin or other cryptocurrencies using your computer. The website keeps the cryptocurrency, and you get higher electric bills, 100% CPU usage that drags down your computer, and reduced battery life.
This problem first came to popular attention with the CoinHive script, which ran when you visited The Pirate Bay, but there are other mining scripts and other websites using them. So what can you do? Thankfully, there is some software that can help.