What is Cryptojacking?
Cryptojacking is a type of cyberattack that takes over or “hijacks” the process of cryptomining, which is the verification of cryptocurrency transactions. Cryptocurrency transactions need to be verified by solving complex mathematical puzzles, and this is done using powerful computers. Cryptojackers want to use your computer’s power to mine cryptocurrency for them for free. They do this by tricking you into clicking a link or downloading a file that installs malware on your device. This malware then secretly uses your computer’s processing power to mine for cryptocurrency, which is then sent to the cryptojacker’s digital wallet.
How to Prevent Cryptojacking
Now that we understand what cryptojacking is, let’s look at some ways to protect ourselves and our organizations from becoming victims:
- Ad-blockers: Cryptojacking scripts are often hidden in online ads. Using an ad-blocker can help block and detect these malicious scripts.
- Disable JavaScript: JavaScript is a programming language commonly used in web browsers. It is also often exploited by cryptojackers. Disabling JavaScript can prevent cryptojacking code from running, but it may also disable some website functions.
- Secure Your Devices: Any device that connects to a network, such as your computer or phone, is an endpoint. Make sure these endpoints are secure by installing and regularly updating antivirus software to stop cryptojackers from accessing your devices.
- Generate Secure Servers: Talk to your IT department about setting up secure servers that are less vulnerable to cryptojacking attacks.
Types of Cryptojacking
There are two main ways that cryptojacking attacks can be carried out:
Browser Cryptojacking
This type of attack creates content that automatically runs cryptomining software in your web browser when you visit a certain webpage. This is also known as drive-by cryptomining. Attackers might create a website with hidden cryptomining code or compromise an existing site. They use clever tricks to get around ad blockers and force your device to run their cryptomining software. Some websites even admit that they use your device to mine cryptocurrency while you browse!
Host-Based Cryptojacking
This type of attack infects the target’s computer or server directly, usually by getting the victim to click on a malicious link or download an infected file. Once the malware is installed, it runs in the background, secretly using the computer’s processing power to mine for cryptocurrency.
Don’t Let Cryptojackers Hijack Your Crypto Power!
Cryptojacking is a real threat to individuals and organizations alike, but by understanding how it works and taking some simple precautions, you can keep your digital assets secure. Stay vigilant, keep your software up to date, and browse smart to avoid becoming a victim of this silent cybercrime. Remember, knowledge is power, and now you know how to protect your power from cryptojackers!
