A polymorphic virus is a piece of code characterized ... may approve everything with a fear of blocking essential operating system services. But if the allowed listing is used correctly, this ...

While a simple xor used to be a quick and dirty way to do this, for something really sophisticated, polymorphic encryption is a much better way to go. A helpful tool to achieve this is ...

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 ...