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

### REPLY:
Malware can evade detection by antivirus software by using various techniques such as packing, which compresses and encrypts the malicious code, making it difficult for antivirus scanners to identify. Another method is polymorphism, where the malware constantly changes its code structure to create new variants that are not recognized by antivirus signatures. Additionally, rootkit techniques can be employed to hide the presence of malware by modifying the operating system's kernel or system files. These techniques allow the malware to remain undetected by antivirus software, enabling it to carry out its malicious activities.