Many of these solutions, both DRM and anti-cheat, work using the principle of checking if the user is using the original unmodified files, and checking if the user is not also modifying the memory of the running program with some tool.
Many of these solutions, both DRM and anti-cheat, work using the principle of checking if the user is using the original unmodified files, and checking if the user is not also modifying the memory of the running program with some tool.