At the crux, it's about genuinely caring enough about others, that we (those with some InfoSec awareness, knowledge, skills, and experience) freely offer our own specialities.
To bring the security focus up front in the software development life-cycle. Assisting Software Developers/Engineers in the effort to improve their infosec awareness, knowledge, skills and experience.
To help bring positive change in the Developer, Engineering (InfoSec) community, starting with our own.