To establish a thriving security culture across an organization, a CISO must engage with developer teams early and often, considering the unique mindset of each team type - trailblazing, adopter, or inertia teams. This involves empathy, top-down prioritizations, collaboration, education, recognition, process changes, and tooling integration to drive alignment and success. By understanding developer needs and tailoring security initiatives accordingly, a CISO can foster a culture that encourages dev buy-in, cultural change, and automation to accelerate secure development.