Security screws, also called tamper proof or vandal proof screws are available in grade 304 stainless steel and come in a variety of drive types and styles including:
Stainless steel security wood screws are available in:
Stainless steel security screw drive types and sizes vary and depend on the screws size and security drive style, see full guide here.
6Lobe refers to the number of points in the drive and looks similar to a star shape. A torx drive is the brand name for the same drive and comes from Camcar Textron