- No code protection is unbreakable because computers must see instructions to execute them, so the goal is to abstract program execution.
- Virtualization obfuscation involves creating a fantasy CPU, compiling input code to its instruction set, and running it in an interpreter, similar to the Java Virtual Machine.
- Web protections (JavaScript) are generally easier to crack than binary protections, as binary security has a more established scene.
- A basic example shows a program as an array of instruction IDs and operands, with a loop that interprets instructions like push and add.
- Monitoring program memory can break such virtualized code, just like executable programs.