What is Cryptojacking?

Cryptojacking, also known as malicious crypto-mining, is a type of cyberattack in which hackers use a victim's computer or other computing device to mine cryptocurrency without their consent or knowledge. The attacker gains control of the victim's computing resources, such as processing power, to generate cryptocurrency, typically without the victim's knowledge or consent. This is achieved through the use of malware, which is installed on the victim's computer through various methods such as phishing attacks, drive-by downloads, and social engineering techniques.

Once the malware is installed, it begins using the victim's computing resources to mine cryptocurrency, which can generate significant profits for the attacker. In some cases, cryptojacking can cause a victim's computer to slow down, overheat, and even crash. This not only results in a poor user experience, but also has the potential to cause physical damage to the victim's device.

Cryptojacking attacks are becoming increasingly common, as they are often seen as an easy and low-risk way for hackers to make money. In addition, the rise of cryptocurrency has made this type of attack more appealing to cybercriminals, as the value of many cryptocurrencies continues to increase.

To protect against cryptojacking, users should be cautious when clicking on links or downloading files from unknown sources. Additionally, installing and regularly updating security software and using ad-blockers can help prevent cryptojacking malware from being installed on a user's device.

Simplified Example

Cryptojacking is a bit like someone sneaking into your treehouse and using your toys without your permission.

Imagine you have a really cool treehouse that you built with your friends, and you keep your favorite toys and games inside. One day, someone sneaks into your treehouse while you're not looking and starts playing with your toys without asking for your permission. They might even take some of your toys and play with them somewhere else.

Cryptojacking works in a similar way, but with computers instead of treehouses and with digital currencies like Bitcoin and Ethereum instead of toys. It's when someone else uses your computer's processing power without your permission to mine or create new digital currencies for themselves. They might use a special program that they install on your computer without your knowledge, and this program takes up your computer's resources and electricity to mine digital currencies.

This is a problem because it can slow down your computer, use up your electricity, and even damage your hardware. It's like someone sneaking into your treehouse and taking your favorite toys without your permission, which can make you feel upset and angry. That's why it's important to make sure your computer is protected with good security measures like antivirus software and to be careful about downloading programs or clicking on links from unknown sources.

History of the Term

The term "cryptojacking" emerged within the sphere of cybersecurity in the early 2010s, signifying a malicious practice of secretly utilizing someone else's computing power to mine cryptocurrencies. This covert act involves exploiting vulnerabilities in software, websites, or devices to install mining scripts or malware without the knowledge or consent of the device owner. Rather than directly stealing data or money, cryptojackers harness the victim's computational resources to mine cryptocurrencies like Bitcoin, Monero, or Ethereum.

Initially, the term gained prominence around 2017 with the exponential rise in cryptocurrency values. Cybercriminals sought to capitalize on this trend by employing cryptojacking techniques as an alternative means to acquire cryptocurrencies without the need to invest in expensive mining hardware or software. As it gained notoriety, security experts and software developers began devising countermeasures and protective measures to prevent and mitigate such unauthorized mining activities, leading to the ongoing evolution of cybersecurity strategies and tools to combat cryptojacking.


Drive-by Cryptojacking: Drive-by cryptojacking is a type of attack where an attacker infects a website with malicious code that automatically executes when a user visits the site. The code runs in the background of the user's browser and uses their computer's resources to mine cryptocurrency without their knowledge or consent. This type of attack can happen through vulnerabilities in the website's code, or by compromising the website's server.

Malicious Mining Software: Malicious mining software is another common form of cryptojacking. Attackers create a program that appears to be a legitimate cryptocurrency mining tool, but is actually a piece of malware that infects the user's computer and mines cryptocurrency for the attacker. This type of attack is often spread through infected software downloads or phishing scams that trick users into downloading and installing the malware.

Rogue Cryptocurrency Mining Pools: Rogue cryptocurrency mining pools are another type of cryptojacking attack. In this scenario, an attacker creates a fake mining pool that appears to be a legitimate one. They then trick users into joining the pool by offering higher rewards than other legitimate pools. Once the users have joined the pool, the attacker can use their computing power to mine cryptocurrency for themselves, without paying the users the rewards they were promised. This type of attack is often spread through social engineering tactics, such as fake advertisements or fake news articles.

  • Hacking: Hacking is a term used to describe the process of gaining unauthorized access to computer systems and networks, with the intention of exploiting them.

  • Mining: Mining in cryptocurrency refers to the process of verifying and adding transactions to a blockchain network.