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

### REPLY:
One common sign that indicates a computer may be infected with malware is the presence of a keylogger. This type of malware records keystrokes made by the user, allowing the attacker to capture sensitive information such as passwords, credit card numbers, and personal messages. Another sign could be the presence of a remote access trojan (RAT), which allows an attacker to gain unauthorized control over the infected computer and perform various malicious activities. It is important to regularly update antivirus software and perform system scans to detect and remove any malware infections.