Menlo Security has launched the first Browser Security Platform designed to secure AI agents and human employees, raising concerns about non-human actors in enterprise systems. The Mountain View-based company announced the platform following a fiscal year surpassing $140 million in ARR with over 120% net retention. The platform addresses emerging threats from AI agents operating outside traditional security frameworks. It provides "Guardian Runtime" protection, enforcing instruction-data separation to prevent goal hijacking and data exfiltration. Menlo recently partnered with Google to deliver least-privileged remote access via browsers. The company serves over 1,000 global enterprises, protecting eight million users and millions of simultaneous AI agent sessions. The platform will be showcased at RSAC 2026.

Menlo Security takes on AI agent risk with new browser security platform. Browser security company Menlo Security Inc. today announced a new Browser Security Platform that is purpose-built to secure "agentic enterprise," where autonomous artificial intelligence agents increasingly outnumber human employees and the browser has become the operating system for both. The new offering sees Menlo provide a unified control plane to apply machine-speed governance and threat prevention to both human and non-human actors. As enterprises are deploying AI agents to automate complex workflows, the agents often utilize headless browsers or leverage web protocols directly, operating entirely outside the scope of traditional browser security. Menlo argues that threat actors are already exploiting this transition with attacks invisible to the human eye, such as prompt injection via documents and steganography. The Menlo BSP takes the issue head-on by treating humans and agents as equal participants in the workforce, with the new platform providing AI agent security, universal connectivity, deterministic visibility and least-privileged agent access. Menlo AI Agent Security acts as a "Guardian Runtime" for the agentic economy. It enforces instruction-data separation to ensure agents never mistake malicious data for legitimate commands. In addition, universal connectivity translates complex, application programming interface-deficient legacy web user interfaces into sanitized, machine-readable data. Meanwhile, deterministic visibility offers full forensic intel and real-time session-flow views. And finally, least-privileged agent access enforces granular controls via Menlo Secure Application Access to prevent autonomous agents from moving laterally or extracting unauthorized data. The platform moves the security control point directly into the browser session to provide consistent protection and what Menlo calls "Architectural Immunity." That's a state where evasive threats are fundamentally unable to execute because the attack surface is neutralized in the cloud through multimodal visual analysis before reaching an AI reasoning workflow or a human endpoint. By providing a unified trust layer, Menlo says, it eliminates the most sophisticated threats of the agentic age at their point of entry. "AI agents represent a fundamental shift in enterprise computing," said Ramin Farassat, chief product officer at Menlo Security. "For the first time, security teams have a single control plane that applies the same governance policies to an AI agent processing invoices as to the human CFO approving them - at machine speed, with full forensic visibility." Menlo Security has raised $250 million in funding, including rounds of $25 million in June 2015, $40 million in December 2017, $75 million in June 2019 and $100 million in November 2020. Investors in the company include Vista Equity Partners Management, Neuberger Berman Group, General Catalyst Group Management, JPMorgan Chase & Co., American Express Ventures, Ericsson Ventures, HSBC Holdings plc, Engineering Capital, Osage University Partners and Sutter Hill Ventures LP. Image: siliconangle/ideogram. A message from John Furrier, co-founder of SiliconANGLE: Support its mission to keep content open and free by engaging with theCUBE community. Join theCUBE's Alumni Trust Network, where technology leaders connect, share intelligence and create opportunities. * 15M+ viewers of theCUBE videos, powering conversations across AI, cloud, cybersecurity and more * 11.4k+ theCUBE alumni - Connect with more than 11,400 tech and business leaders shaping the future through a unique trusted-based network. About SiliconANGLE Media SiliconANGLE Media is a recognized leader in digital media innovation, uniting breakthrough technology, strategic insights and real-time audience engagement. As the parent company of SiliconANGLE, theCUBE Network, theCUBE Research, CUBE365, theCUBE AI and theCUBE SuperStudios - with flagship locations in Silicon Valley and the New York Stock Exchange - SiliconANGLE Media operates at the intersection of media, technology and AI. Founded by tech visionaries John Furrier and Dave Vellante, SiliconANGLE Media has built a dynamic ecosystem of industry-leading digital media brands that reach 15+ million elite tech professionals. Its new proprietary theCUBE AI Video Cloud is breaking ground in audience interaction, leveraging theCUBEai.com neural network to help technology companies make data-driven decisions and stay at the forefront of industry conversations.