Leadership transition follows another strong year of growth and positions the Browser Security leader to capitalize on the market opportunity created by the rise of AI Agents

Menlo Security, a leader in Browser Security protecting both human and AI-agent workflows, today announced the appointment of Bill Robbins as CEO. Robbins succeeds co-founder Amir Ben-Efrain, who will continue as Executive Chairman of the Board. The leadership transition comes as enterprises accelerate adoption of AI agents and shift critical workflows to the browser.

Robbins brings more than 30 years of leadership experience, including senior roles at Mandiant, FireEye, Sophos and Symantec. Since joining Menlo as President in 2024, he has helped strengthen operating discipline and accelerate go-to-market execution, contributing to the company surpassing $140M in ARR in its last fiscal year ending January. Customers continue to renew and expand with Menlo as evidenced by net retention rates above 120% and an excellent Net Promoter Score of 67. As CEO, Robbins will lead day-to-day operations and continued product innovation as Menlo enters its next phase of growth.

“I’m honored to step into the CEO role and build on the foundation Amir and the Menlo team have created,” said Robbins. “As enterprises accelerate deployment of autonomous AI agents alongside people, preemptive security continues to be top of mind. Our focus is to continue to deliver superior security and governance to our customers through the browser of their choice, while innovating for this next phase of growth.”

As Executive Chairman, Ben-Efraim will continue to play an active role in shaping the company’s long-term vision, strategy, and partnerships to tackle the challenges posed by AI agents. “Bill’s promotion to CEO allows us to capitalize on our recent performance and the massive opportunity ahead of us,” said Ben-Efraim. “Bill is a world-class operator and together we will extend Menlo’s market leadership as AI agents reshape how enterprises operate through the browser. I could not be more excited about Menlo’s future with Bill at the helm and how we are positioning the company for accelerating growth.”

Within the last year, the Menlo Secure Enterprise Browser solution delivered exceptional results, protecting over 8 million daily users globally and earned recognition as 2025 Google Cloud Security Partner of the Year for its AI-driven threat prevention capabilities. Additionally, Menlo’s acquisition of Votiro in 2024 expanded its platform beyond browser security into file and data security, creating a unified stack for the modern enterprise. The company plans to continue the expansion of its Browser Security Platform with enhanced capabilities across AI security, secure access, and advanced data security.

For more information, visit https://www.menlosecurity.com/.

About Menlo Security

A pioneer in browser security, Menlo Security is a cloud-based security solution that turns any browser into a secure enterprise browser. Menlo Security prevents web-borne threats and eliminates the complexities of remote access by securing application access and enterprise data across any browser and on any device. Menlo Security protects over 8 million users and is trusted by major global business, including Fortune 500 companies, eight of the ten largest global financial services institutions, and large government institutions. The company is backed by Vista Equity Partners, Neuberger Berman, General Catalyst, American Express Ventures, Ericsson Ventures, HSBC, and JPMorgan Chase. Menlo Security is headquartered in Mountain View, California. For more information, please visit www.menlosecurity.com.

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