Antivirus (AV) evasion refers to the methods and techniques used by cybercriminals and malware to avoid detection by antivirus and other security software. These tactics can include disguising malicious code, modifying files, encrypting payloads, or exploiting weaknesses in security programs. The goal is to bypass security measures, allowing malware to infect systems and operate undetected. AV evasion is an ongoing challenge for cybersecurity professionals, as attackers continually develop new strategies to outsmart evolving security technologies.