Most of the time, it’s caused by mundane problems, like out-of-date software. Poor Mac performance usually isn’t the result of malware.
That’s why it’s so important to check your Mac for malware regularly. If that happens, you need to know it’s there, so you can work on removing it. But viruses, worms, ransomware and other digital threats can sometimes get through anyway. Being careful and using antivirus software can help you avoid malware infections most of the time. As more people buy Macs, cybercriminals take an increased interest in targeting them with malicious software. Malware is a growing problem for Mac users.