### Comment:
What are some common techniques used to bypass antivirus software?

### REPLY:
There are several techniques that can be used to bypass antivirus software. One method is to encrypt or pack the malware using custom encryption algorithms or packers that are not commonly detected by antivirus programs. Another approach is to use code obfuscation techniques to make the malware's code difficult to analyze and detect. Additionally, attackers can use rootkit technologies to hide the presence of the malware from antivirus scans.