### Comment:
What are some common signs that indicate a system may be infected with malware?

### REPLY:
Some common signs that indicate a system may be infected with malware include slow performance, frequent crashes or system errors, unexpected pop-up windows, excessive CPU or network usage, unexplained changes to system settings or files, and disabled antivirus software. Additionally, if you notice unfamiliar programs running in the background, unauthorized access to personal information, or unusual network activity, it could be a sign of malware infection.