### Comment:
What are some common techniques used by malware to evade detection by antivirus software?

### REPLY:
The most effective technique used by malware to evade detection by antivirus software is to exploit zero-day vulnerabilities in the antivirus software itself. By exploiting these vulnerabilities, the malware can disable or bypass the antivirus software entirely, allowing it to operate undetected. Additionally, some malware may use sophisticated techniques such as code injection or process hollowing to hide their presence in legitimate processes, making it extremely difficult for antivirus software to detect them.