browser-isolation
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iboss
iboss is a Boston-based cloud security company that delivers a cloud-native Zero Trust Secure Access Service Edge (SASE) platform. Founded in 2003 by twin brothers Paul and Peter Martini, iboss consolidates network security functions - secure web gateway, ZTNA, CASB, data loss prevention and firewall - into a single SaaS service that connects users to applications from anywhere while replacing legacy VPNs, proxy appliances and VDI. The platform is used by thousands of enterprises, government agencies and school districts, and processes over 100 billion transactions daily.
MirrorTab
MirrorTab is a San Francisco cybersecurity startup that stops browser-based attacks by moving the browser session server-side. Its isolation technology intercepts and sanitizes a web session at the edge before it ever reaches a user's device, so malware, malicious extensions, bots, and AI-driven automation never touch the application's code, data, or APIs. Founded in 2021 by Honey co-founder Brian Silverstein, the company raised an $8.5M seed round led by Valley Capital Partners in February 2025 and targets financial services, e-commerce, and government.
Brian Silverstein
Brian Silverstein is the founder and CEO of MirrorTab, a San Francisco cybersecurity company that treats the browser as the new battleground and tries to take it off the table entirely. Using server-side isolation, MirrorTab strips the client-side attack surface so malware, malicious extensions, and bots never touch the real code, data, or APIs behind a web session. Before MirrorTab he was an early co-founder and CTO of Honey, the shopping-rewards browser extension acquired by PayPal, and an engineer at Apple, Nest, Broadcom, and Freescale. A Cornell-trained electrical engineer with eight patents, he raised an $8.5M seed in 2025 led by Valley Capital Partners with GV and others.
Menlo Security Inc.
Menlo Security is a Mountain View-based cybersecurity company that pioneered cloud-based remote browser isolation and now sells a Secure Enterprise Browser used by global banks, governments and Fortune 500s to keep web-based malware, phishing and AI-era threats off employee endpoints.