Cybersecurity leaders in the San Francisco Bay Area protect some of the most important government, technology, research, and infrastructure systems in the world. From city services to semiconductors and global retail, these CISOs guide programs that keep essential operations secure and resilient. Below are 10 active Chief Information Security Officers (CISOs) making a major impact in 2025.
Michael Makstman – CISO, City and County of San Francisco
Michael Makstman leads cybersecurity for the City and County of San Francisco. He directs enterprise security strategy and coordinates defense across many departments and public services. His work centers on risk management, incident readiness, and improving resilience across the city’s digital infrastructure.
Bryan Green – CISO, Andreessen Horowitz (a16z)
Bryan Green oversees security at the global venture capital firm a16z. He protects internal systems, investment operations, and the firm’s large technology ecosystem. His responsibilities include portfolio risk review and supporting innovation across early stage and growth companies.
Kannan Perumal – VP and CISO, Applied Materials
Kannan Perumal manages security at Applied Materials, one of the world’s top semiconductor companies. He secures intellectual property, operational technology, and global manufacturing environments. His leadership covers supply chain security, fabrication technology, and enterprise risk reduction.
Jeremiah Kung – CISO, AppLovin
Jeremiah Kung directs information security for AppLovin’s mobile advertising and gaming platforms. He protects large scale cloud environments, mobile applications, and customer data. His work focuses on fraud prevention and securing performance driven digital products.
Leda Müller – Chief Information Security and Privacy Officer, Stanford University
Leda Müller leads information security and privacy at Stanford University. She protects academic systems, research data, and healthcare operations. Her role balances openness and collaboration with strict security controls across a diverse and high value environment.
Wagner Nascimento – VP and CISO, Synopsys
Wagner Nascimento manages global cybersecurity at Synopsys, a leader in semiconductor design software. He directs engineering security, cloud protection, and software integrity programs. His focus includes safeguarding code, managing supply chain risk, and improving enterprise resilience.
Sean Oldham – CISO, Broadcom
Sean Oldham oversees Broadcom’s security operations across hardware, networking, and enterprise software products. He leads global incident response, product security, and risk management. His work supports technology infrastructure used by customers around the world.
Rick Orloff – CISO, Pure Storage
Rick Orloff guides security strategy at Pure Storage. He leads data protection and cloud security efforts that support storage as a service. His responsibilities include securing customer environments and building strong enterprise security controls.
Pavi Ramamurthy – Global CIO and CISO, Blackhawk Network
Pavi Ramamurthy oversees information security, fraud prevention, and enterprise IT for the payments and fintech provider Blackhawk Network. She supports secure transactions, regulatory requirements, and global systems that serve partners and consumers.
Marty Ray – VP and CISO, Williams Sonoma
Marty Ray directs information security for Williams Sonoma’s retail and e-commerce operations. He protects customer data, supply chain systems, and point of sale platforms. His work supports the company’s global logistics and digital commerce network.
Cybersecurity Leadership Across the Bay Area
These CISOs drive cyber defense across government, education, fintech, semiconductors, cloud infrastructure, and retail. Their leadership strengthens resilience for systems that keep the Bay Area running. As threats evolve, their work remains essential to protecting organizations that influence both regional and global technology.