Security and defense-by-design approaches promote positive security culture by making cybersecurity a collective responsibility right from the start - not as an afterthought. When security engages only during build and test phases, organizations face delayed go-lives, increased remediation costs and critical vulnerabilities introduced into production environments. Early engagement transforms security from a team of "No" into enablers who guide projects through appropriate controls, threat modeling and supply chain assessments from inception.

In this session, BISO Tom Mills explores National Gas's evolutionary journey toward defense-by-design maturity, examining:

• Prioritizing people, process and technology to build defensible architecture fit for regulatory compliance;
• Implementation strategies involving stakeholders across project management, delivery frameworks and governance forums;
• Cultural transformation techniques that encourage project teams to engage security proactively, not reactively.