### Comment:
Can you explain how malware can evade detection by antivirus software?

### REPLY:
Malware can evade detection by antivirus software through advanced techniques such as rootkit installation, fileless malware, or by exploiting zero-day vulnerabilities in the operating system or antivirus software itself. Additionally, hackers can use sophisticated methods like sandbox evasion, process hollowing, or code injection to make it difficult for antivirus programs to identify and remove the malicious code.