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§ Private Profile · Mountain View, CA, USA
Menlo Security is a technology company.
Menlo Security provides an enterprise browser security platform, protecting users and applications from internet-borne threats. Its core offering employs isolation technology, transforming any browser into a secure environment to eliminate malware from web content, documents, and email. This manages the browser attack surface, enforces security policies, and secures data, providing robust prevention.
Founded in 2013 by Amir Ben-Efraim, Poornima DeBolle, and Gautam Altekar, Menlo Security sought to redefine cybersecurity. Ben-Efraim (former Juniper Networks VP) and DeBolle (Juniper product executive) recognized the need for a new paradigm. Their insight: make the web safe by isolating threats, addressing persistent security challenges.
The platform serves global enterprises, government agencies, and major financial institutions. Menlo Security's mission is to proactively eliminate malware, preserving user choice and a seamless browsing experience. The company advances its platform, expanding protection for human and AI agent interactions.
Menlo Security has raised $251.0M across 5 funding rounds.
Menlo Security has raised $251.0M in total across 5 funding rounds.
Menlo Security has raised $251.0M across 5 funding rounds. Most recently, it raised $100.0M Series E in November 2020.
Menlo Security is a cybersecurity company that builds cloud-based browser isolation and zero-trust access solutions designed to protect organizations from advanced web-borne threats such as zero-day phishing, ransomware, and malware. Its flagship product, the Menlo Secure Enterprise Browser, transforms any browser into a secure enterprise browser by executing all web traffic in a hardened digital twin of the user’s browser in the cloud, preventing threats from ever reaching endpoints or networks. Menlo serves enterprises and government agencies, enabling safe, high-fidelity browsing and secure application access without disrupting user experience or requiring software installation. The company has demonstrated strong growth momentum by continuously innovating its cloud-native security platform and expanding capabilities such as AI-powered threat detection and zero-trust secure application access[1][2][3][4][6].
Menlo Security was co-founded by Amir Ben-Efraim, who has driven the company’s vision to redefine browser security since its inception. The idea emerged from the need to eliminate malware delivered through web browsers, which traditional security tools often fail to stop. Early traction came from pioneering remote browser isolation technology that executes web content remotely in the cloud, isolating threats before they reach the user’s device. Over time, Menlo evolved from a browser isolation vendor to a comprehensive secure enterprise browser and zero-trust access provider, reflecting the growing importance of cloud security and hybrid workforce protection[2][7][8].
Menlo Security rides the critical trend of zero-trust security and cloud-native cybersecurity solutions, addressing the escalating sophistication of web-based attacks and the shift to hybrid workforces. The timing is crucial as adversaries increasingly use AI to craft evasive threats, making traditional endpoint and network security insufficient. Menlo’s cloud isolation approach fundamentally changes how organizations secure web access and application usage by eliminating threat exposure at the source. This innovation supports the broader move toward Secure Access Service Edge (SASE) architectures and zero-trust frameworks, influencing how enterprises and governments protect digital assets in a perimeter-less world[3][5][6].
Menlo Security is positioned to continue expanding its leadership in secure enterprise browsing and zero-trust access as cyber threats grow more complex and pervasive. Future trends shaping its journey include increased adoption of AI-driven threat intelligence, deeper integration with cloud and endpoint ecosystems, and broader deployment across hybrid and remote work environments. Menlo’s influence is likely to grow as organizations prioritize user-centric security models that do not compromise productivity, making secure browsing and application access foundational to modern cybersecurity strategies. The company’s ongoing innovation in cloud isolation and zero-trust enforcement will keep it at the forefront of protecting enterprises against evolving web threats[2][3][6].
Menlo Security has raised $251.0M in total across 5 funding rounds.
Menlo Security's investors include Ryan Atlas, American Express Ventures, Arbor Ventures, Company Capital, Engineering Capital, General Catalyst, Intel Capital, Osage University Partners, Viola Ventures, Joey Low, Richard Smith, Neuberger Berman.