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

### REPLY:
Some sophisticated malware may use advanced techniques like zero-day exploits or rootkits to bypass antivirus software. These techniques exploit vulnerabilities in the operating system or software, allowing the malware to gain elevated privileges or hide its presence from security tools. By using such techniques, malware can avoid detection and continue to operate undetected, potentially causing significant harm to the infected system. It is crucial for antivirus software to stay updated with the latest threat intelligence to effectively detect and mitigate these advanced malware threats.