What Is Cryptojacking? Detection and Prevention  

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Key Takeaways

  • Cryptojacking is the unauthorized use of computing resources to mine cryptocurrency.
  • Signs of cryptojacking include device slowdown, overheating, and high CPU usage.
  • Cryptojacking can occur through malware, browser scripts, or supply chain attacks.
  • It can damage hardware, increase electricity costs, and compromise network security.
  • Protection methods include using antivirus software, ad blockers, and avoiding suspicious websites.
  • Businesses should implement strong network security and educate employees about risks.
  • Coinhive was a widely abused service for cryptojacking before its shutdown in 2019.
  • WannaMine and FaceXWorm are examples of cryptojacking malware spread through different methods.
  • Cloud cryptojacking targets vulnerabilities in cloud infrastructure for unauthorized mining.
  • Even major companies like Tesla have fallen victim to cryptojacking attacks.

Imagine your device suddenly slowing down, getting hot, and losing battery. It could be a sign of cryptojacking.

Hackers make money by cryptojacking. They secretly use your computer or phone to mine for digital coins, like Bitcoin or Monero. They do this without your permission. So, cryptojacking in cybersecurity has become a hot topic nowadays.

In this blog, we’ll explain cryptojacking. We’ll cover how it works. And, most importantly, how to protect yourself. By the end, you’ll know how to spot the signs of cryptojacking. You’ll also learn how to protect your devices from this tricky cybercrime.

Table Of Contents

  1. Key Takeaways
  2. Understanding Cryptojacking
    1. Cryptojacking Meaning
  3. Comparison of Legitimate Cryptocurrency Mining and Cryptojacking
  4. Cryptojacking Attack Mechanisms
    1. Common Methods Used by Attackers
  5. Cryptojacking Detection: Signs Your Device Might Be Cryptojacked
    1. Performance Issues
    2. High CPU Usage
    3. Cloud Cryptojacking
    4. Increased Electricity Costs
    5. Unusual Network Activity
  6. The Impact of Cryptojacking on Devices and Networks
    1. Potential Damage to Hardware
    2. Increased Electricity Consumption
    3. Risks to Business Networks and Personal Data
  7. How to Protect Yourself from Cryptojacking?
    1. Tips for Individuals
    2. Tips for Businesses
  8. Cryptojacking Examples
    1. Coinhive
    2. WannaMine
    3. FaceXWorm
    4. Cloud Cryptojacking
    5. Tesla’s AWS Cloud
  9. Conclusion
  10. FAQs

Understanding Cryptojacking

Cryptojacking is the unauthorized use of a user’s computing resources. It is for cryptocurrency mining. The cryptojacking definition highlights this activity as a malicious attack. In it, cybercriminals embed malware or scripts into websites, apps, or online ads. The scripts activate when the user accesses the infected medium. They use the device’s power to mine digital currencies.

Cryptojacking Meaning

The term “cryptojacking” is a combination of “cryptocurrency” and “hijacking.” It refers to the act of hijacking a person’s device or browser. The hijacking is to mine cryptocurrency for the attacker.

Also read Crypto Staking: Fundamentals and How It Works.

Comparison of Legitimate Cryptocurrency Mining and Cryptojacking.

Users can recognize real cryptocurrency mining by understanding the differences in the following table. They can also tell it apart from cryptojacking. It will help them protect their devices from unauthorized exploitation.

Comparison of Legitimate Cryptocurrency Mining and Cryptojacking.

Cryptojacking Attack Mechanisms

Cryptojacking typically injects malicious code into websites, online advertisements, or software. This code is made to run a cryptocurrency mining script in the victim’s web browser or on their device. It uses the available processing power to mine cryptocurrency for the attacker.

The mining script is often hidden, making it hard for the victim to detect. It runs silently in the background. It uses the victim’s CPU or GPU. But the victim doesn’t notice. The mined cryptocurrency is then sent to the attacker’s cryptocurrency wallet.

Common Methods Used by Attackers

Cryptojackers employ various methods to infect victims and hijack their computing resources:

  • Cryptojacking Malware: Attackers distribute malware that installs a cryptocurrency mining program on the victim’s device. It is also known as cryptojacking software on the victim’s device.
  • Browser-Based Cryptojacking: Attackers inject cryptocurrency mining scripts into websites or online advertisements.
  • Supply Chain Attacks: Attackers compromise the software supply chain. They do this by injecting malicious code into real software or updates.
  • Exploiting IoT Devices: Attackers target Internet of Things (IoT) devices. These include smart home appliances or industrial equipment.

Cryptojacking Detection: Signs Your Device Might Be Cryptojacked

Cryptojacking is designed to be stealthy. But, some signs can indicate your device or network has been compromised:

Cryptojacking Detection: Signs Your Device Might Be Cryptojacked

Performance Issues

One of the first signs of cryptojacking is slow devices. Your computer or smartphone might start running much slower. Or, it might overheat more than usual. This could be a sign it’s being used to mine cryptocurrency without your knowledge.

High CPU Usage

Cryptojacking scripts run in the background. They will typically make your device’s CPU usage spike. If your CPU usage is high, even when you’re not using resource-intensive applications.

Cloud Cryptojacking

In some cases, attackers may target cloud infrastructure rather than individual devices. Signs of cloud crypto jacking include:

  • Unexplained spikes in cloud service usage or costs.
  • Unfamiliar processes or applications running on your cloud infrastructure.
  • Unusual network traffic to and from your cloud environment.

Increased Electricity Costs

Cryptocurrency mining uses lots of energy. If your device or network is cryptojacked, it can increase your electricity bills.

Unusual Network Activity

Cryptojacking malware may also show odd network activity. This may include more data usage. It also involves connections to unknown IP addresses or domains.

Also, read Infrastructure Requirements for Effective Crypto Staking.

The Impact of Cryptojacking on Devices and Networks

Cryptojacking can harm the devices and networks it infects. It causes hardware damage and higher operational costs.

The Impact of Cryptojacking on Devices and Networks

Potential Damage to Hardware

Cryptocurrency mining needs intense computation. It can harm a device’s hardware. Cryptojacking scripts run in the background. They can cause the device’s CPU and GPU to work at full capacity for a long time.

Increased Electricity Consumption

Mining cryptocurrency uses lots of energy. Cryptojacking exploits a victim’s device to do this mining without their consent. As a result, cryptojacking can lead to a big increase in the victim’s electricity use and costs. This is especially true for people or businesses with many infected devices.

Risks to Business Networks and Personal Data

Cryptojacking attacks harm individual devices. They can also risk the broader network when a device on a business network is hacked. The malware can spread to other connected systems. These include data theft or ransomware. This can expose business or personal data to cybercriminals. It leads to more financial and reputational harm.

How to Protect Yourself from Cryptojacking?

Cryptojacking is a growing threat that can impact both individuals and businesses. Taking proactive measures can significantly reduce the risk of falling victim to a cryptojacking attack.

Tips for Individuals

To protect yourself as an individual, consider the following steps:

  • Install reputable antivirus and anti-malware software and keep it up to date. These tools can detect and block cryptojacking malware.
  • Use ad blockers and browser extensions designed to prevent cryptojacking, such as minerBlock and No Coin. These can block cryptojacking scripts from running in your web browser.
  • Avoid visiting suspicious websites. This is especially true for those known for pirated or illegal content. These sites often need more proper security. They may be infected with cryptojacking malware.
  • Disable JavaScript in your browser’s settings. While this may impact some website functionality, it can help prevent cryptojacking scripts from executing.

Tips for Businesses

Businesses need to take a more comprehensive approach to protect their networks and devices:

  • Use strong network security protocols. These include firewalls, intrusion detection systems, and access controls.
  • Regularly scan your network and devices for signs of cryptojacking, such as unusual CPU usage or overheating.
  • Use tools like Activity Monitor or Task Manager to monitor system performance.
  • Secure your cloud infrastructure. Do this by regularly updating configurations.
  • Monitor suspicious activity and use strong authentication measures.
  • Educate your employees about the risks of cryptojacking. Teach them how to spot potential threats, like suspicious emails or websites.
  • Stay Updated on Cybersecurity Threats.

Also, read Automated Staking Scripts and Tools for Server-based Nodes.

Cryptojacking Examples

Cryptojacking Examples

Credits: Freepik

Cryptojacking is a growing threat that has impacted individuals and organizations worldwide. Here are some notable examples of cryptojacking attacks.


Coinhive was a real cryptocurrency mining service. Attackers widely abused it. They used it to put mining scripts into websites without the owner’s consent. At its peak, Coinhive was used in over two-thirds of cryptojacking incidents. But, it was shut down in March 2019.


WannaMine is a kind of malware. It was first discovered in 2018. It is usually sent to victims’ computers through phishing emails. Or it is sent by exploiting software flaws. WannaMine can spread across a network and infect multiple devices.


FaceXWorm is a cryptojacking worm. It spreads through Facebook Messenger and other social media platforms. It tricks users into clicking malicious links that install the worm on their devices.

Cloud Cryptojacking

In 2021, many zero-day vulnerabilities were found on Microsoft Exchange servers. They allowed remote code execution. Attackers exploited these vulnerabilities. They used them to mine cryptocurrency on compromised cloud infrastructure.

Tesla’s AWS Cloud

In 2018, Tesla’s Amazon Web Services (AWS) cloud was found to have cryptojacking malware. But, the data exposure was minimal.

Also read 7 Types of Staking Explained: Your Go-To Crypto Staking Guide for 2024.


You must understand cryptojacking. It is crucial to protect your devices and data from this hidden threat. Cryptojacking can significantly impact performance, increase costs, and compromise security. Stay informed. Take action to protect. You can prevent unauthorized use of your resources.

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Q. What is the difference between cryptojacking and regular hacking?

Cryptojacking involves the unauthorized use of a person’s or organization’s computing resources. It is used to mine cryptocurrency. Regular hacking can include many bad activities, such as data theft, system breaches, and network disruptions. Cryptojacking is about stealthily using computing power for financial gain. It does so without the user’s consent.

Q. What are the different types of cryptojacking?

There are two main types of cryptojacking: host-based and web-based. Host-based cryptojacking involves malware installed on a victim’s computer or device, while web-based cryptojacking uses malicious scripts embedded in websites. Both types result in unauthorized cryptocurrency mining, significantly slowing your computer performance.

Q. Can cyptojacking occur on mobile devices?

Yes, cryptojacking can impact mobile devices, just as it can affect desktops and laptops. However, it’s important to note that mobile devices are particularly susceptible to this threat. They can fall victim to malicious apps or compromised websites that run cryptojacking scripts, leading to slower performance, overheating, and reduced battery life.

Q. How often should I scan my device for cryptojacking malware?

Scanning your devices for cryptojacking malware regularly, at least once a week, is advisable. Also, enable real-time protection in your antivirus. It finds and blocks cryptojacking as it happens.

Q. What are the legal implications of cryptojacking?

Cryptojacking is illegal. It involves the unauthorized use of computing resources. It can be prosecuted under cybersecurity and computer misuse laws. People or groups caught cryptojacking can face big legal penalties. These include fines and imprisonment.

Q. What is cryptojacking, and how does it work?

Cryptojacking is a malicious activity where attackers use cryptojacking code to hijack a victim’s computing resources, such as their computer or mobile device, to mine cryptocurrency. This involves embedding cryptomining code in websites, ads, or apps, which runs complex mathematical calculations to mine cryptocurrencies like Monero.

Q. How can I detect cryptojacking on my device?

Detecting cryptojacking can be challenging, but signs include slower computer performance, high CPU usage, and overheating. Disabling JavaScript can prevent cryptojacking from running on compromised legitimate sites, and using internet security software can help detect and prevent cryptojacking attacks.

Q. How does cryptojacking impact system performance?

Cryptojacking may significantly degrade system performance. The cryptojacking mining process uses a large portion of your computer’s central processing power, leading to slower computer performance, increased energy consumption, and potential hardware damage due to constant high loads.

Q. What are the common sources of cryptojacking malware?

Common sources of cryptojacking malware include compromised websites that use crypto mining scripts, infected media content, and free content from dubious sites. Attackers often embed cryptomining code in these sources, which activates when users stay on the page for some time or interact with the content.

Q. How can I detect if my computer is being used for cryptojacking?

You can detect cryptojacking by observing signs like slower computer performance, increased fan noise, and overheating. Cryptojacking involves running mining operations in the background, which consumes many system resources. To confirm, you can check for high CPU usage and unexpected spikes in activity, which might indicate that your computer is being used to mine cryptocurrency without your consent.

Q. How can I prevent cryptojacking on my system?

To prevent cryptojacking, it is much better to install security software and keep it updated. Ensure all windows are closed promptly after use and avoid visiting owners of dubious sites, which often host cryptomining malware. Regularly update your operating system and software to fix vulnerabilities and practice good internet security habits to protect against this malware attack.

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