im not a master

im not a master, im just an ordinary guy.
im not a teacher, im just a guy who can gave you all a little of my knowledge.
im not a supervisor, im just a guy who want to help you do something efficiently.
im not a programmer, but i can write some litle code.
im not a hacker, im only a guy who interested in security.

so who am i ?. still im not a master, so don't called me master okay.