### Comment:
How can malware evade detection by antivirus software?

### REPLY:
Malware can evade detection by antivirus software through various techniques such as using packers or encrypting the malicious code to make it difficult for the antivirus software to analyze. Another method is polymorphism, where the malware constantly changes its appearance to avoid detection. Additionally, attackers may use rootkit techniques to hide the presence of malware on the system, making it harder for antivirus software to detect and remove it.