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

### REPLY:
One sign of a malware infection is the presence of a keylogger, which can record every keystroke entered by the user, including sensitive information like passwords and credit card numbers. Another indicator is unauthorized access to personal files or data, where malware can steal sensitive information and send it to the attacker. Additionally, ransomware infections are characterized by the encryption of files and a demand for payment in exchange for their release.