metamorphic codeとは 意味・読み方・使い方

In computer virus terms, metamorphic code is code that can reprogram itself. Often, it does this by translating its own code into a temporary representation, editing the temporary representation of itself, and then writing itself back to normal code again. This procedure is done with the virus itself, and thus also the metamorphic engine itself undergoes changes. This is used by some viruses when they are about to infect new files, and the result is that the "children" will never look like their "parents". The computer viruses that use this technique do this in order to avoid the pattern recognition of anti-virus software: the actual algorithm does not change, but everything else might.