Cryptojacking- An Emerging Threat in the world of Digital Currencies

Well you read it right if you are seeing your system’s degraded performance after some internet surfing, you might have been Cryptojacked. So First let me tell you what Cryptojacking is? Be careful! though because high CPU usage doesn’t always mean Cyrptojacking is taking place. For example, if you are using an old hardware generation system and visiting a modern website OR running multiple programs, this may cause high usage by itself.

What is Cryptojacking?

As the Word Crypto is related to the Cryptocurrencies (Bitcoin, Litecoin etc.), so all the cryptocurrencies uses “Cryptography” to secure the transactions And Cryptojacking is the secret use of your system resources to mine cryptocurrency. It has surged in popularity over the past few months, with hackers capitalizing on the boom in everything from Bitcoins to Litecoins. Millions of users have potentially been impacted, with proceeds from the operation totalling millions of pounds a year

 How does it work?
  • Cryptojackers deploy malware(Mining Code in the form of Javascripts) to force an entry into the computers of remote users, and then using their hardware to mine for coins. This form of distributed computing can be profitable since it eliminates the cost burden of owning a mining rig with hundreds of processors.


  • It used to happen when the victim unknowingly installed a program that secretly mines cryptocurrency. In-browser Cryptojacking uses JavaScript on a web page to mine digital cash.


  • Cryptojackers usually target popular websites which draw audiences numbering in the millions every day. Once the malware patch has been embedded on a website, it infects the web browsers of visitors, slowing down their machines, often causing them to overheat.


  • Because JavaScript runs on almost about every website you visit, the JavaScript code responsible for in-browser mining doesn’t need to be installed. If you think it’s nothing, think again…You load the page, and the in-browser mining code just runs. No need to install, and no need to opt-in.


  • There’s no immediate way to tell that the page has a hidden mining component, and you may not even notice any impact on performance, but someone has hijacked your devices for digital profit.
How to Avoid being Cryptojacked?

As you never know when you system has been cryptojacked because the mining scripts runs in background. Here are few tips that can help you to stay safe from this:

  • Use Ad-Blocker Software.
  • Use NoCoin Chrome extension provides security against other mining software which mine for bitcoin, ethereum, and ripple.
  • Use Antivirus software such as Malware Bytes .
  • Update Browser extensions
  • Block Websites Scripts from running automatically.

Source- Hackerbits

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