Disclosed is a method of generating a structure comprising at least one virtual machine, the method comprising: obfuscating a first virtual machine source code, thereby yielding a first obfuscated virtual machine (OVM) source code; associating a processor identifier with the first OVM source code, thereby yielding a processor-specific first OVM source code; compiling the processor-specific first OVM source code, thereby yielding a processor-specific first OVM. Furthermore, a structure generated by said method is disclosed.