6 Easy Ways To Block Cryptocurrency Mining In Your Web Browser

block cryptocurrency mining
Cryptocurrencies are
digital or virtual currencies that make use of encryption for
security. As they are anonymous and decentralized in nature, one
can use them for making payments that can’t be tracked by
governments. As crypto-mining has gained popularity, the website
owners are now using cryptocurrency mining scripts to use the CPU
power of the visitors for earning profits. This has also inspired
some developers to come up with methods to block
cryptocurrency mining in the web browser via different methods.

The Pirate Bay, the world’s most popular torrent website, was
recently spotted testing a Monero
cryptocurrency miner
on their websites. The website
confessed that it could be using coin mining in future to keep
the website running. This was followed by some other
of similar nature.

This practice isn’t new, but the Pirate Bay was the first
popular website that was seen using a cryptocurrency miner.
This has also fueled the ethics debate as the website owners
are found to be keeping the visitors in the dark.

However, I was surprised to notice that many users who commented on
the article and Facebook
didn’t mind their favorite website
using their CPU power to earn revenue. This could be due to the
fact that torrent websites are home to tons of notorious
advertising. Before going ahead and telling you how to block
cryptocurrency mining in web browser, let me tell you how to
find out if you’re already becoming a target of such mining
activities —

How to find out if my PC is secretly mining cryptocurrency?

Apart from ransomware, bitcoin mining malware are rising in
popularity at an exponential rate. In case the culprit is some
website which is using your web browser to mine crypto coins,
you can find that out easily.

block mining script

The Pirate Bay users spotted the miner due to a huge spike in
CPU usage when they visited the website. You can also use the
same technique to see if a particular website is sweating your
processor and earning money. In case most of the browser
tabs are closed, and no applications are running, there are
chances that you are becoming a target of such mining campaign.
If you aren’t much tech-savvy, you can perform hit and trial
with the suspected websites and see which one of them is
spiking the CPU usage. The tech-savvy users can perform
this task much efficiently with the help of resource monitoring

How to block cryptocurrency mining in web browser?

Most of the websites that are making TPB-like headlines are
using a new service called Coin Hive for mining. There are few
simple ways to block such activities:

1. Use No Coin Chrome Extension

Installing Chrome extensions is the most straightforward method
to stop coin mining in the web browser. No Coin
is one such free solution. This open-source extension is a
reliable and safe way to control how a website is interacting
with your web browser.

no coin extension

As soon as you visit a website, No Coin will detect and show if
any such activity is going on. You’ll see a red symbol as shown
in the screenshot below. While this extension blocks any such
activity, it also allows you to whitelist a website for a
period of time.

2. Use minerBlock Chrome extension

Just like No Coin, minerBlock
Chrome extension
is another open-source tool that you can
use to block cryptocurrency mining in the web browser.
These extensions currently list a few popular miner domains to
their list, and they are expected to add more once they get

Here’s how minerBlock notification looked like when I visited
Coin Hive’s website:

minerblock extension

3. Block coin mining domains in hosts file

This is the manual way of blocking particular domains that you
don’t find harmful or irritating. Due to such blocking, your
browser won’t be able to connect to these domains. We can edit
the hosts file and redirect it to

host file editing to block mining script

In Linux, you need to open the hosts file by running following
command and add coin-hive.com to the end of the

In Linux, run the following command:

For Windows, navigate to C:WindowsSystem32driversetc and
edit the hosts document to add coin-hive.com at the

Please note that this change blocks the mining scripts which
are hosted by coin-hive.com. In case you come across other
mining script domains, you can add them further down the line.

4. Block domains in Ad blocker

Ad blocking extensions like AdBlock can help you block
cryptocurrency mining. Depending on your web browser, you can
find relevant settings to block particular domains. For
example, in Chrome, for AdBlock, navigate to the list of
extension and find AdBlock. There, look for
Customize > Block an ad by its URL.
Then, add the following text in the text box:


adblock stop mining

5. Use NoScripts in Firefox

For Firefox, you can use JavaScript-blocking extensions like
NoScript. Before using it to
block cryptocurrency mining in the web browser, please note
that it’s pretty aggressive and it could break lots of websites
as it disables all scripts running on pages. If you’re using
Tor Browser, you
would already be knowing about NoScripts and its use. You can
use any one of these methods to get rid of
the cryptocurrency mining in web browser.

firefox noscripts

6. How to block CoinHive using Opera web browser

With release of Opera 50 web browser, the company brought
in-built functionality to block CoinHive scripts and
cryptocurrency mining techniques. This will allow the users to
make sure that their computers don’t go crazy whenever any
website using the digital coin mining technique is encountered.
The users can find this option in Settings
(Preferences on macOS) > Basic > Block ads
under the Recommended lists of ad filters.

block cryptocurrency mining

Should I really go ahead and stop cryptocurrency

The answer to this question depends on the website which is
using a crypto miner. If the website is notifying you as soon
as you visit it and you’re comfortable with it, then it’s no
harm. Another point that you must take into consideration is
the mining load that your CPU would bear. A website should
also let you know how much processing power does it intend to

In case you’re willing to support your favorite website via
this alternative source of revenue and they are being honest
about their practices, things are fine.

Did you find this article to stop a website for mining digital
coins helpful? Don’t forget to share your views and feedback
with us.

Also Read: How To Access
Blocked Websites? 10 Easy Ways To Bypass Them


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