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

### REPLY:
When a system is infected with malware, it can exhibit various signs such as the creation of new user accounts with administrative privileges, unusual system behavior like the mouse cursor moving on its own, or the camera or microphone turning on without user interaction. Additionally, the presence of unknown processes or services running in the background, or the sudden appearance of unfamiliar software or browser extensions can also indicate a malware infection.