Secure by design means performing more security and assurance activities earlier in the product and system lifecycles. A secure-by-design mindset addresses the security of systems during the requirements, design, and development phases of lifecycles rather than waiting until the system is ready for implementation. The need for a secure-by-design mindset is exacerbated by the amount of interconnectedness of today's systems and the increasing amount of automation that characterizes system development. These trends have led to increased levels of risk and made implementation of security controls during test and patching systems after deployment increasingly unsustainable. In this podcast from the Carnegie Mellon University Software Engineering Institute, Robert Schiela, technical manager of the Secure Coding group, and Carol Woody, a principal researcher in the SEI's CERT Division, talk with Suzanne Miller about the importance of integrating the practices and mindset of secure by design into the acquisition and development of software-reliant systems.