6 Signs Your Computer Could Be Infected With Malware

High CPU usage may indicate a malware infection, often through crypto-mining malware. It works by covertly using your CPU to search for cryptocurrency blocks, often through the exploitation of third-party plug-ins. To check CPU usage, Windows users can press Ctrl+Shift+Esc and select Performance > CPU. Mac users can check through the activity monitor. Normal CPU usage should be less than 10%.