126: Shifting Left: Why Secure Software Starts at the Design Stage

In this episode of the (CS)²AI Podcast, host Derek Harp welcomes Mehdi Tarrit Mirakhorli, Associate Professor at the University of Hawaii and a Cybersecurity Expert, to discuss Secure by Design—a fundamental shift in how we develop and deploy software in industrial control systems (ICS) and operational technology (OT). With over 15 years of R&D experience for DARPA, the Air Force, and DHS, Mehdi shares why modern software is inherently vulnerable and how we can learn from aviation, medical, and safety-critical industries to build resilient systems from the ground up. The conversation dives deep into the risks of insecure by design software, the challenges of implementing true security practices, and the role of government policies in shifting liability from users to vendors. Mehdi explains the importance of threat modeling, attack surface analysis, and secure architecture frameworks to mitigate cyber threats before they arise. He also highlights how software development must evolve beyond rapid deployment cycles to integrate security as a core design principle. If you’re an ICS professional, cybersecurity engineer, or software developer, this episode provides actionable insights on reducing vulnerabilities at scale, implementing proactive security measures, and preparing for the future of cyber threats. Subscribe now and stay ahead in the ever-evolving world of industrial cybersecurity!