Anyone who deals with cryptocurrencies knows that mining requires very powerful systems. So if you are thinking of pursuing a "sport" you must first invest in a very good computer system. 
Recently some websites have started to use the system resources of the users who visit them, for mining (mining currencies). Some of them appear in screen a notification explaining what will happen before it starts, while others start using your system without saying anything.
This publication refers to the second sites, which are starting to use the resources of their visitors' systems to gain cryprobes.
Who is mining? is a web application that has a comprehensive list of all known mining websites. It also allows you to check out a mining page without telling it to the end user.
Visit it whoismining.com and type the URL of the page that you suspect uses your browser to do mining cloaking. The web application will confirm whether your suspicions are true.
The app still has endless lists of webpages with that behavior.
If you see that a page you are interested in uses the computer σας, μπορείτε απλά να σταματήσετε να την επισκέπτεστε. Αν πάλι δεν μπορείτε χωρίς αυτήν μπορείτε να αποκλείσετε το mining από το πρόγραμμα περιήγησής σας με ένα πρόσθετο ή μια extension.
It's worth debating whether or not this practice is right, especially when sites choose not to reveal what they're doing. Some users of these pages have no problem allowing their system to be used for mining crypto, however it should be up to the user whether they want to do so or not.
