Menlo Security, a leader in browser security protecting both human and AI-agent workflows, has appointed Bill Robbins as Chief Executive Officer. Robbins succeeds co-founder Amir Ben-Efraim, who transitions to Executive Chairman of the Board. The leadership change follows a year of strong performance and positions the company to capitalize on the expanding market opportunity driven by the rapid rise of autonomous AI agents shifting critical enterprise workflows to the browser.
Since joining Menlo as President in 2024, Robbins has strengthened operational discipline and accelerated go-to-market execution, contributing to the company achieving over $140 million in annual recurring revenue (ARR) in its last fiscal year ending January. High customer loyalty is evident in net retention rates exceeding 120% and a Net Promoter Score of 67.
Robbins' extensive background in cybersecurity includes senior executive roles at leading firms such as Mandiant, FireEye, Sophos, and Symantec. His contributions since joining Menlo have helped drive disciplined scaling and faster market penetration.
“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 remain actively involved in long-term strategy, vision, and key partnerships to address emerging challenges from 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.”
In the past year, Menlo's Secure Enterprise Browser has delivered strong results, safeguarding more than 8 million daily users worldwide. The platform earned the 2025 Google Cloud Security Partner of the Year award for its AI-driven threat prevention capabilities.
The 2024 acquisition of Votiro broadened the offering beyond browser security to include comprehensive file and data protection, creating a unified security stack for modern enterprises facing diverse threats.
Menlo plans continued innovation across its Browser Security Platform, with enhanced features targeting AI security, secure access services, and advanced data safeguards to meet evolving enterprise needs in an AI-agent era.
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.
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