### Comment:
What are some key indicators of a malware infection on a computer?

### REPLY:
One key indicator of a malware infection on a computer is the presence of a keylogger, which can record all keystrokes made by the user, including sensitive information like passwords and credit card details. The attacker can then access this data remotely and misuse it. Additionally, malware infections can often go undetected by antivirus software, allowing the attacker to continuously collect sensitive information without the user's knowledge.