Hello
thanks

Please check this link:

http://www.pandasoftware.com/virus_info/glossary/

Mutex: Some viruses can use a mutex (Mutual Exclusion Object) to control access to resources (e.g. programs or even other viruses) and prevent more than one process from simultaneously accessing the same resource. By doing this, they can make it more difficult for an antivirus to detect them. These viruses can also carry other malicious code in the same way that other types, such as polymorphic viruses, do.




What is a mutex really?

Please give a simple example about mutex.

Why can those viruses make it more difficult for an antivirus to detect them?

Thanks.