Seems like Windows behavior, but it’s a malware sign: pay attention to it

What looks like a typical glitch in Windows might actually be a sign of a hidden and dangerous threat lurking in your system. Many users have noticed their PCs suddenly getting loud, with fans blasting and the processor pushed to its limits—even when only basic apps like Word or a browser are open. But the moment the Task Manager is opened to investigate, everything suspiciously calms down. This strange behavior is not just frustrating—it’s a potential sign of cryptojacking.

How cryptojacking hides in plain sight

Cryptojacking is a type of cyberattack where hackers secretly use your device to mine cryptocurrencies. Instead of stealing your data, these attacks drain your system’s performance for profit. Advanced versions of this malware are smart enough to detect when you open diagnostic tools like Task Manager or antivirus software—and immediately stop their activity to avoid being caught.

This creates the illusion that nothing is wrong, which makes detection harder. However, signs like extreme processor use, overheating, high electricity consumption, or loud fans can indicate something isn’t right.

What you can do to protect your device

To avoid falling victim to these silent threats, users should take precautions. Using script blockers in browsers, keeping all software updated, avoiding sketchy downloads, and actively monitoring processor use are essential habits. Most importantly, installing a reliable antivirus with real-time protection can stop many of these attacks before they begin.

While cryptojacking may seem less invasive than other types of malware, its effects are serious. If left unchecked, it can permanently damage hardware or rack up energy bills, all while operating under your radar.