### Comment:
What are some common signs of a malware infection on a computer?

### REPLY:
When a computer is infected with malware, it may exhibit various signs such as the sudden appearance of explicit or offensive content on the screen, unauthorized access to sensitive files or personal information, and the initiation of unwanted actions such as sending spam emails or launching denial-of-service attacks. Additionally, in some cases, the malware may encrypt files on the system and demand a ransom for their release, a type of malware known as ransomware.