Meta Security Engineer Interview Coding Challenges

A user has an upcoming interview with Meta for a security engineer position and has received documentation to prepare. They are wondering what type of coding challenges to expect, mentioning that they are comfortable with scripting, automation, and parsing files/logs. The user gives an example of a staircase problem presented in the documentation, where one needs to determine the number of different combinations to climb n steps by taking only 1 or 2 steps at a time.