Modern malware, such as spyware and cryptominers, is hard to detect, so it’s difficult to remove. But if you’re experiencing:

• Poor performance on a computer
• A pop-up message that appeared out of nowhere and is difficult to get rid of
• Startups of programs that you didn’t recognize
• Continuously spinning hard drives makes a noise.

If you’re experiencing multiple symptoms at once, it’s likely you’ve got a virus. However, modern malware, like spyware and crypto miners, go out of their way to stay hidden.