### Comment:
How can malware be hidden in legitimate-looking files?

### REPLY:
Malware can be hidden in legitimate-looking files using various techniques. One method is through file extension manipulation, where the malware is given a file extension that appears harmless, such as .doc or .pdf. Another method is through file compression, where the malware is compressed within a legitimate-looking archive file. Additionally, malware can be obfuscated or encrypted to make it difficult to detect using traditional antivirus software.