Noma Security Appoints Diana Kelley as Chief Information Security Officer and Mavi Grizer as Vice President of Customer Success

NEW YORK, Aug. 4, 2025 /PRNewswire/ -- Noma Security, the leading agentic AI security company, today announced the appointment of two distinguished leaders to its executive team: Diana Kelley as Chief Information Security Officer (CISO) and Mavi Grizer as Vice President of Customer Success. These strategic appointments underscore the Noma Security commitment to building a world-class leadership team as the company scales to meet surging customer demand in enterprise AI security.

"Diana and Mavi are not just seasoned executives, they are transformative leaders who have helped shape the latest generation of cloud and AI security technologies," said Niv Braun, CEO and Co-Founder of Noma Security. "Mavi's track record of building world-class customer success organizations at companies like Wiz, and Diana's reputation as one of the most-trusted voices in AI security and the enterprise cybersecurity industry, make them a perfect fit for the Noma Security team. We could not have found two more-qualified individuals for these crucial customer-facing roles than Diana and Mavi."

Diana brings an impressive and unique background to Noma Security holding senior leadership roles at major technology and cybersecurity companies, including Microsoft Cybersecurity Field CTO, Global Executive Security Advisor at IBM Security, and GM at Symantec. Diana most recently served as the CISO at Protect AI. A recognized voice in the industry, Diana serves on multiple advisory boards including WiCyS, The Executive Women's Forum (EWF), and InfoSec World. Her extensive experience and dedication to solving AI security challenges will help bridge the gap between Noma Security innovation and real-world customer needs. As CISO, she will serve as a trusted advisor to customers while spearheading strategic programs to support continuous innovation and AI security leadership.

"AI is rewriting the rules of enterprise technology and with that comes a wave of new, complex security risks," said Kelley. "What drew me to Noma Security is its clarity of purpose and innovation in AI security. This isn't just another security platform, it's a purpose-built foundation for protecting the future of AI. I'm excited to join a team that's setting the standard for how AI should be secured."

Mavi brings more than two decades of experience leading customer success, strategic partnerships, and enterprise transformation at some of the world's most influential technology companies. Most recently, she served as Global Director of Customer Success at Wiz, where she helped scale one of the fastest-growing cloud security companies. Following that role, she also led customer strategic engagements at Wiz, with a focus on customer satisfaction. Prior to that, Mavi spent more than a decade at Microsoft, where she held multiple leadership roles across customer success, partner strategy, and business development. She will be focused on delivering exceptional experiences for Noma Security customers, with an emphasis on enhanced customer satisfaction and business growth.

"Noma Security is solving one of the most-critical challenges in enterprise technology: how to secure and govern AI responsibly," said Grizer. "What excites me most is the company's unwavering focus on customer success and innovation. I'm honored to join the team and I look forward to working with such a distinguished group of individuals during this exciting next chapter as the company redefines what it means to secure AI at scale."

This news comes on the heels of the Noma Security $100M in funding round, underscoring the company's rapid growth and continued momentum.

To learn how Noma Security can help your team secure agentic AI, everywhere:

• Request a demo of the Noma Security platform: https://noma.security/lp/demo
• Meet members of the Noma Security executive and product teams at Black Hat USA 2025: https://noma.security/lp/secure-ai-at-black-hat-usa-2025/

About Noma Security
Noma Security is the unified AI agent security platform giving enterprise organizations the confidence to rapidly adopt AI innovation at scale. Noma Security uniquely helps cybersecurity teams control AI risk through continuous AI discovery, AI security posture management and risk prioritization, and AI red teaming and runtime protection. Backed by Evolution Equity Partners, Ballistic Ventures, Glilot Capital, Cyber Club London, Databricks Ventures and SVCI, Noma Security is widely adopted by Fortune 500 customers and has been recognized by Gartner as a leader in AI trust, risk and security management (AI TRiSM). Learn more at https://noma.security and follow us on Linkedin.

Media Contact
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ICR for Noma Security
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SOURCE Noma Security