According to reports, many websites are now starting to hide mining code in web scripts to steal computing power for mining when users visit, at a very low and undetectable cost of acquiring coins.
How large is this amount? A report from Adguard states that 2.2% of the top 10,000 Alexa TOP pages do this, which is 220 sites, taking up about 500 million computers。
This comes after The Pirate Bay, the world's largest BT resource download site, admitted it was testing web mining with the aim of replacing ad revenue and then making it an ad-free site.
It's not a Trojan and it can't do you any financial damage, but it will eat up a lot of your CPU! This can directly cause your computer to lag or even crash, seriously affecting the Internet experience. What's even more irritating is that many sites don't ask for your permission beforehand, let alone share the "mine" with you!
It is understood that there are currently these ways to become absentee for free.
1.Hidden JS Code
Users automatically start mining as soon as they visit the site and don't get any notification.