I'm sure there's 0 chance your custom logger won't have any bugs either? At best you get some security through obscurity, but your chances go way up on writing

I'm sure there's 0 chance your custom logger won't have any bugs either? At best you get some security through obscurity, but your chances go way up on writing a bug ridden custom library. No software selection paradigm will be 100% secure, that's the one guarantee you'll have.