Technical question about permission access

[Fulgurance]

Hi guys, I have a specific question .

For example when a command will be run, first the system will check if the user have the required access to run it, and then the program can access to the files if it is allowed.

So my question is: is it possible for example to run a program just before this right access check ? Basically I would like to code an additional security layer .

Is it possible to do this ?
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My actual project: https://github.com/Fulgurance/ISM

Ingenius Software Manager is a tool to build and manage a Linux system from scratch.
It will able to manage a linux installation just with a given path to the futur root path