First it was The Pirate Bay, then Showtime was caught secretly using page visitor’s processing power to mine cryptocurrency as a form of alternative revenue.
It has led to some indignation from users of such sites, as well as worry and fear about the vulnerability of users who are visiting sites and staying on them for a long time. However, there are a few things that can be done to protect yourself.
- Check your CPU usage
- Ad Blockers
source
https://cointelegraph.com/news/how-to-check-if-your-pc-being-pirated-to-mine-bitcoin