How to Block Cryptocurrency Miners in Your Web Browser

How to Block Cryptocurrency Miners in Your Web Browser

Here we can see, “How to Block Cryptocurrency Miners in Your Web Browser”

Cryptocurrency miners are a replacement scourge on the online. Sites can now embed JavaScript code that runs in your browser to mine themselves Bitcoin or other cryptocurrencies using your computer. The website keeps the cryptocurrency, and you get higher electric bills, 100% CPU usage that drags down your computer, and reduced battery life.

This problem first came to widespread attention with the CoinHive script, which ran once you visited The Pirate Bay, but other mining scripts and other websites are using them. Researchers even discovered a way that permits a site to mine cryptocurrency after you’ve closed the browser tab. So what are you able to do? Thankfully, some software will help.

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

Apart from ransomware, bitcoin mining malware is rising in popularity at an exponential rate. Just in case the culprit is a few websites using your browser to mine crypto coins, you’ll find that out quickly.

The Pirate Bay users spotted the miner thanks to an enormous spike in CPU usage once they visited the website. You’ll also use an equivalent technique to ascertain if a specific 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 simply getting a target of such a mining campaign. If you aren’t much tech-savvy, you’ll perform hit and trial with the suspected websites and see which one among them is spiking the CPU usage. The tech-savvy users can perform this task much efficiently with the assistance of resource monitoring tools.

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Apart from opening Windows Task Manager with Ctrl+Alt+Delete or Activity Monitor on Mac by pressing Command + Space and look for Activity Monitor, you’ll open Chrome’s task manager by getting to Menu > More Tools > Task Manager. It’ll show tab-wise CPU usage in Chrome and assist you to spot the culprit.

How to block cryptocurrency mining in web browser?

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

1. Use No Coin Chrome Extension

Installing Chrome extensions is the most straightforward method to prevent coin mining within the browser, and no Coin is one such free solution. This open-source extension may be reliable and safe thanks to controlling how an internet site interacts with your browser.

As soon as you visit an internet site, No Coin will detect and show any such activity. You’ll see a red symbol as shown within the screenshot below. While this extension blocks any such activity, it also allows you to safelist an internet site for a period of your time.

2. Use minerBlock Chrome extension

Like No Coin, miner block Chrome extension is another open-source tool that you can use to dam cryptocurrency mining within the browser. These extensions currently list a couple of popular miner domains to their list, and that they are expected to feature more once they get popularity.

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. Thanks to such blocking, your browser won’t be ready to hook up with these domains. We will edit the host’s file and redirect it to

In Linux, you would like to open the host’s file by running the following command and add to the top of the document:

sudo nano /etc/hosts

In Linux, run the following command:

sudo nano /private/etc/hosts

For Windows, navigate to C:\Windows\System32\drivers\etc and edit the hosts document to add at the end.

Please note that this alteration blocks the mining scripts which hosts. Just in case you encounter other mining script domains, you’ll add them further down the road.

4. Block domains in Ad blocker

Adblocking extensions like AdBlock can assist you in blocking cryptocurrency mining. Counting on your browser, you’ll find relevant settings to dam particular domains. For instance, in Chrome, for AdBlock, navigate to the list of extensions and find AdBlock. There, search for Customize > Block a billboard by its URL. Then, add the subsequent text within the text box:

5. Use NoScripts in Firefox

For Firefox, you’ll use JavaScript-blocking extensions like NoScript. Before using it to dam cryptocurrency mining within the browser, please note that it’s pretty aggressive, and it could break many websites because it disables all scripts running on pages. If you’re using Tor Browser, you’d already know about NoScript and its use. You’ll use anybody of those methods to urge obviate the cryptocurrency mining within the browser.

6. How to block CoinHive using Opera web browser

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

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7. Use Malwarebytes

Installing a reputed antimalware solution could be an alternative to installing Chrome anti miner extensions like No coin. The advantage of employing a solution like Malwarebytes is that it offers protection to your complete device. Malwarebytes also offers an Android app that comes with 30 days free trial. Other top antivirus programmes for your computer have also started offering miner adblocking protection.

Should I really go ahead and stop cryptocurrency mining?

The answer to the present question depends on the website, which is employing 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 that the mining load that your CPU would bear. An internet site should also allow you to skills much processing power does it shall utilize.

If you’re willing to support your favourite website via this alternative source of revenue and are honest about their practices, things are fine.


I hope you found this helpful guide. If you’ve got any questions or comments, don’t hesitate to use the shape below. 

User Questions:

  1. Can cryptocurrency hijacking be done through the browser?

Browser-Based Cryptojacking

Cryptojacking attacks can happen directly within an internet browser, using IT infrastructure to mine for cryptocurrency. Hackers create a crypto mining script employing a programing language then embed that script into numerous websites.

2.What is Cryptojackers?

Cryptojackers have a method to enslave your computer. … You click on a malicious link in an email, and it loads crypto mining code directly onto your computer. Once your computer is infected, the crypto jacked starts working round the clock to mine cryptocurrency while staying hidden within the background.

  1. Can someone Mine your Bitcoin?

However, it’s impossible to mine bitcoin with a home set-up today profitably. Due to increased difficulty levels, after a few years and lots of burnt-out graphics cards, a home miner would be lucky to accumulate 0.1 bitcoin.

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