The Dark Side of Crypto Mining: Understanding and Avoiding Cryptojacking

Cryptojacking refers to unauthorized cryptocurrency mining that occurs through web browsers using other people's computing resources without their consent. This practice is employed both by cybercriminals seeking quick profits and website owners trying to generate additional income.

Historically, before cryptojacking emerged, unauthorized mining required hackers to install malware on users' devices and hope it would remain undetected. Browser-based mining has made this process much simpler - attackers only need to insert mining code into websites and wait for visitors to unknowingly generate cryptocurrency.

Opera reports that cryptocurrency mining scripts are present on over 3 million websites. Given how widespread this issue is, all internet users should understand the risks and know how to protect themselves.

What's the mechanism behind cryptojacking? When users visit infected websites, their device's processing power is hijacked for cryptocurrency mining. Unlike traditional mining malware, browser-based mining only occurs during active website visits and ceases when users leave. The key distinction is that the website owner deliberately implements the mining code.

While browser-based mining causes less hardware damage than mining viruses, it still leads to component overheating, decreased device performance, and higher electricity consumption.

How can you identify cryptojacking? Unexplained device slowdown without resource-intensive applications running may indicate cryptojacking. Check CPU usage - if it's at 100%, hidden mining is likely occurring. The solution is to close the suspicious website immediately.

Computer users might notice louder fan noise while browsing, which often signals cryptojacking. However, older devices may experience similar symptoms due to modern websites' demanding nature.

What are the protection methods? While detecting and stopping browser mining is straightforward, prevention is preferable. Several solutions exist:

1. Premium antivirus software (like Malwarebytes Premium);
2. No Coin browser extension for Chrome, Firefox and Opera;
3. Opera browser with built-in cryptojacking protection;
4. Anti-WebMiner software that protects all installed browsers.

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