Without an identifiable pattern to match, the only way to discover a polymorphic virus is by its actions (see behavior detection). See self-extracting file. Also called a "stealth virus," hundreds ...

A new antivirus methodology made polymorphic viruses toothless and easily detected: the emulator program. This program acts as if it's executing at least the initial part of a program -- usually ...

Cybercriminals are now using ‘polymorphic malware,’ a virus that constantly alters its code to evade detection. This evolving threat has made it even harder for investigators to crack ...