In this episode of the Chasing Entropy Podcast, host Dave Lewis, Global Advisory CISO at 1Password, sits down with Rob Fuller (a.k.a. Mubix), cybersecurity leader, Marine Corps veteran, red teamer, and technical advisor—to explore the twists, turns, and lessons from a career built at the intersection of curiosity, community, and defense.

Early Sparks of Curiosity

Rob shares how tinkering with Game Genie and GameShark consoles in his youth planted the seeds of hacking and cybersecurity. From experimenting with memory manipulation in video games to dabbling in early online communities, his fascination with technology was clear—even if he didn’t yet have a name for it.

The Marine Corps and Grounding in Reality

His journey took a pivotal turn in the U.S. Marine Corps, where Rob shifted into IT and found his calling at the Marine Corps CERT. There, he confronted threats at a national scale, battling nation-state adversaries and learning the importance of context, failure, and resilience. The high-stakes environment taught him perspective—what truly counts as critical versus what’s just noise.

Red Teams, Purple Teams, and the Role of AI

Rob dives into his philosophy on red vs. purple teaming, how organizations misstep in their security approaches, and where AI fits into the equation. While AI can accelerate tasks like data analysis and content generation, he stresses that human judgment remains essential, particularly when weighing real-world risk.

Maturity in Vulnerability Disclosure Programs

Rob outlines the evolution of Vulnerability Disclosure Programs (VDPs)—from a simple [email protected] email, to structured bug bounties, to advanced maturity where vulnerabilities are ballooned out, templated, and continuously scanned across entire infrastructures. Tools like Nuclei earn his praise as underrated game-changers in scaling this process.

What’s Overrated, What’s Underrated

When asked about overrated tools, Rob jokingly points to Splunk, acknowledging it as a powerful log platform but often overhyped without the right people and processes behind it. In contrast, he champions Nuclei for its ability to empower teams with scalable, reusable vulnerability detection.

Leadership, Curiosity, and Mentorship

For those entering cybersecurity, Rob emphasizes starting the leadership journey early—seeking credentials, mentorship, and experience beyond being just a technical contributor. For senior leaders, he advises fostering curiosity and root cause analysis across teams, and creating spaces for “show and tells” where junior staff can share passion projects that might blossom into innovative enterprise-wide solutions.

Silicon Valley and Beyond

Rob also reflects on his experience as a technical advisor for HBO’s Silicon Valley, ensuring cybersecurity accuracy behind the scenes. From late-night calls to writer’s room debates, the role gave him a chance to influence how hacking and security were portrayed to millions of viewers—an opportunity to shift the narrative away from the usual Hollywood myths.

Listen to the full conversation for Rob’s insights on community, resilience, and the underrated value of curiosity in shaping the future of cybersecurity.

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