Cryptojacking meaning

There is a new word called CRYPTOJACKING has been introduced in this world. Do you know what is cryptojacking? In this article you will understand what is cryptojacking and how it is a threat to the world? And how we can prevent it attack?


How to know whether my PC is also the victim?

You will be astonished to know that few hackers have developed a javascript which runs in the background of your PC when you visit a website from your browser. What happens when those unknown javascript runs on your browser? Your CPU will start mining (monero) for the developer of the website whom you are visiting. Your CPU usage will reach 100% without your will. Its the javascript which is running in the background will result in crypto jacking. So, your PC is mining without your knowledge. And your electricity bill will shoot. This is as good as hacking, using the owner resource i.e computer without his knowledge. In the above picture, you can see the CPU utilization in %. It is normal in the above picture as it is showing variable usage. But if it shows constantly more than 95% when you are using in your CPU in the normal way (i.e not playing high end games and software), then you need to pay attention. It can be a case of cryptojacking.

The estimated revenue generated by cryptojacking is in millions of $ but again it depends on a number of factors. The most important ones, of course, are the audience, and how long people stay put on a website. The more the people give away time while surfing the site, the more CPU cycles that can be borrowed.

How to be safe from cryptojacking?

To protect yourself from cryptojacking, you can add sites you’re worried about, or ones that you know practice in-browser mining, to your browser’s ad blocking tool. There’s also a Chrome extension called No Coin, created by developer Rafael Keramidas, that blocks Coinhive mining and is adding protection against other miners, too.

Check your CPU usage, if you feel your computer is slow, and you can hear the fans running full speed without any reason. Open “Task Manager” on Microsoft Windows ([Ctrl]+[Shift]+[Esc]), “Activity Monitor” on Mac, and “top” on the Linux command line. And check the load on CPU. By checking the CPU PERCENTAGE. It should reach maximum only when you are running some big tool/application otherwise, it should be average.


I will be giving you the list of the website who do cryptojacking, be aware of these websites.

hxxp://[/]Content[/]js[/]c-hive.js rated as Malicious Websites
hxxps://[/]lib[/]coinhive.min.js rated as Malicious Websites

  • 7 of the Alexa top 1000 sites have the mining script enabled. Most of these are Blogspot sites with different top-level domains (TLD) — e.g. .com, .mx, etc.
  • 16 of the Alexa top 5000 sites have the script
  • 3 of the Pixalate top 1000 sites have the script
  • 4 of the Pixalate top 5000 sites have the script