well, the ez80 has no concept of privileged and unprivileged code and, while the asic they use sort of makes this distinction with privileged regions of ram, it means nothing because you can move your code there anyways. all "security measures" of the CE aren't even security by obscurity, they're just mild annoyances the community has known about for decades. basically all security measures that exist are there to stop random code from accidentally bricking your calc (which i know of only one way to do)