Remote browser isolation executes web content on a remote machine and sends only a safe representation to the user so whatever the page tries to run, it runs somewhere disposable.
Menlo Security remains the reference pure-play, Zscaler and Cloudflare deliver isolation as a platform feature at scale, and the category’s real question in 2026 is when to use RBI versus the newer enterprise browsers. Ten options, one decision framework.
The Decision Matrix
| If this describes you | Choose | Why |
| Want the deepest pure-play isolation | Menlo Security | Category-defining engineering |
| Already on Zscaler SSE | Zscaler | Isolation as a policy action, no new vendor |
| Already on Cloudflare | Cloudflare | Edge-network isolation, easy trial |
| Palo Alto estate | Palo Alto Networks | RBI folded into Prisma Access |
| Symantec proxy heritage | Broadcom (Symantec) | Isolation tied to mature SWG |
| Data-guardrail focus (DLP-led) | Forcepoint | Isolation within risk-adaptive DLP |
| High-assurance / government | Ericom (Cradlepoint) or Authentic8 | Hardened, compliance-first models |
| Investigations / OSINT teams | Authentic8 | Purpose-built managed attribution |
| Skyhigh SSE estate | Skyhigh Security | Included isolation tier |
| High-assurance browser isolation | Garrison ULTRA | Hardware-enforced isolation designed for high-risk, government, defense, and critical-infrastructure environments |
Definitional answer: RBI runs web sessions in isolated remote containers, streaming pixels or a reconstructed DOM to the local browser; malicious code never executes locally, and the container is destroyed after the session.
What Changed in This Market
Isolation became a feature, not a product. Zscaler, Cloudflare, Palo Alto, Broadcom, Forcepoint, and Skyhigh now sell RBI as a policy action inside SSE platforms — often included in upper tiers.
Pure-play pricing has compressed accordingly, and standalone vendors have consolidated: Ericom’s isolation now sits under Cradlepoint (Ericsson), and several smaller players have exited or pivoted.
Enterprise browsers changed the question. For managed users, an enterprise browser (Island, Chrome Enterprise Premium) governs behaviour locally at near-zero latency; RBI’s unbeatable case is unmanaged users, unknown sites, and high-risk roles.
Bridging the gap in endpoint security EDR vs XDR, most 2026 architectures use both selectively rather than either universally. Most 2026 architectures use both selectively rather than either universally.
Selective isolation won. Isolating everything is expensive and adds latency everywhere; isolating risky categories uncategorized sites, personal webmail, newly registered domains, links from email captures most of the risk at a fraction of the cost. Every serious platform now supports policy-driven selective isolation.
The Ten Options
1. Menlo Security — the pure-play reference
The pitch: Isolation-first architecture with an “elastic isolation core” that treats every session as hostile, plus strong document isolation and last-mile data controls backed by enterprise malware protection solutions.
Wins: deepest isolation engineering; excellent evasive-threat research; smooth user experience via DOM reconstruction; strong phishing and HEAT-attack focus.
Strains: premium pricing; platform breadth beyond isolation is narrower than the SSE giants.
Best for: organizations buying isolation as the control, not a checkbox.
Image ALT: Menlo Security isolation core session flow2. Zscaler — best inside an SSE platform
The pitch: Browser Isolation as a policy action within ZIA send risky categories, unmanaged devices, or high-risk users through isolation with one rule.
Wins: no new vendor or agent; scale; clean policy integration with the rest of your SWG stack.
Strains: tier placement confirm which bundle includes it; depth tuned for breadth rather than specialist edge cases.
Best for: existing Zscaler estates.
Image ALT: Zscaler browser isolation policy action3. Cloudflare — easiest to adopt
The pitch: Isolation on Cloudflare’s edge network, running a headless browser close to the user, with clientless links replacing traditional Virtual Private Network (VPN) architectures and a generous trial path.
Wins: performance from edge proximity; simple deployment including link-based isolation for email; accessible pricing within Cloudflare One.
Strains: enterprise policy depth trails Menlo; best value when broadly on Cloudflare.
Best for: Cloudflare One customers and quick wins.
Image ALT: Cloudflare edge browser isolation session4. Palo Alto Networks — best in a Prisma estate
The pitch: RBI integrated with Prisma Access so isolation joins firewall-grade inspection in one policy plane, proven alongside Palo Alto Cortex XDR platforms.
Wins: single policy across inspection and isolation; strong threat intel context.
Strains: platform commitment; RBI is a component, not the headline.
Best for: Palo Alto-standardized organizations.
Image ALT: Prisma Access remote browser isolation policy5. Broadcom (Symantec) — proxy-heritage isolation
The pitch: Isolation tied to the mature Symantec SWG/proxy stack, pairing web containment directly with endpoint detection and response (EDR) tools and proven at very large scale.
Wins: deep proxy integration; enterprise scale.
Strains: Broadcom-era licensing and support-model changes are the evaluation issue; innovation cadence.
Best for: committed Symantec estates.
Image ALT: Symantec web isolation with secure web gateway6. Forcepoint — isolation inside risk-adaptive DLP
The pitch: Isolation as an enforcement option in a platform combining RBI with dedicated data loss prevention (DLP) software
risky user, sensitive data, unknown site: render it isolated, block the paste.
Wins: data-guardrail framing; risk-adaptive triggers.
Strains: buying a DLP platform, not point RBI; confirm current portfolio structure.
Best for: DLP-led regulated environments.
Image ALT: Forcepoint risk-adaptive isolation enforcement7. Ericom (Cradlepoint) — high-assurance heritage
The pitch: The long-standing isolation specialist, now within Cradlepoint/Ericsson, ranked among trusted Zero Trust security vendors with strong clientless RBI and virtual meeting isolation options.
Wins: hardened deployments, including regulated and air-gap-adjacent; clientless breadth.
Strains: ownership transition confirm roadmap and branding; smaller ecosystem than SSE giants.
Best for: high-assurance buyers wanting a specialist.
Image ALT: Ericom remote browser isolation architecture8. Skyhigh Security — included with its SSE
The pitch: RBI within Skyhigh’s SSE, inherited from the McAfee Enterprise line, providing granular data exfiltration prevention with full isolation included in upper tiers.
Wins: strong DLP adjacency; sensible bundling.
Strains: smaller independent business post-split; roadmap diligence warranted.
Best for: Skyhigh SSE customers.
Image ALT: Skyhigh Security remote browser isolation tier9. Authentic8 — best for investigations
The pitch: Silo is a purpose-built isolated browser for research, OSINT, and sensitive investigations, powered by actionable threat intelligence feeds to deliver managed attribution, audited sessions, and one-time disposable environments.
Wins: investigation workflows nothing else matches; strong government adoption.
Strains: a specialist tool, not fleet-wide RBI; per-seat economics reflect that.
Best for: fraud, threat intel, law enforcement, trust & safety teams.
Image ALT: Authentic8 Silo managed attribution browser10. Garrison ULTRA — hardware-enforced browser isolation
The pitch: A high-assurance Remote Browser Isolation (RBI) platform that uses Garrison’s hardware-based SAVI (Silicon-Assured Video Isolation) technology to process risky web content outside the organization and deliver it as an interactive video stream.
This keeps malicious web code away from the endpoint while maintaining broad web compatibility within a Zero Trust Architecture.
Wins: hardware-enforced isolation; strong protection against phishing, ransomware, spyware, and malicious web code; near-native browsing experience; designed for high-risk and government environments.
Strains: primarily positioned for high-assurance environments rather than lightweight SMB browser protection; deployment and commercial fit should be evaluated against software-based RBI alternatives.
Important: Garrison was acquired by Everfox, so buyers should verify the current product name, ownership, roadmap, and support model before shortlisting.
Best for: government, defense, critical infrastructure, and organizations requiring high-assurance browser isolation.
Image ALT: Garrison ULTRA hardware-enforced remote browser isolation for high-risk web browsingBuyer’s Guide
Isolate selectively, not universally. Uncategorized and newly registered domains, personal webmail, links arriving from email, and unmanaged-device access to corporate apps that policy set captures most risk with tolerable cost and latency.
Test the experience on real work. Copy/paste, downloads, printing, video calls, complex SaaS apps. Pixel-streaming handles hostile content best; DOM reconstruction feels nativest; each breaks different corners of the web. Pilot with your noisiest users.
Decide RBI versus enterprise browser per population. Managed employees on corporate apps → enterprise browser economics usually win. Contractors, BYOD, high-risk browsing, unknown destinations → RBI. Write the split down before vendors write it for you.
Check the file pipeline. Downloads should pass CDR or sandboxing on the way in; uploads should respect DLP. Isolation without a file story is half a control.
Common mistakes: buying platform-tier RBI and never writing the isolation policies; isolating everything and drowning in latency complaints; and treating isolation as phishing-proof credentials typed into a pixel-streamed phishing page are still gone. Pair with phishing-resistant MFA.
FAQs
What is remote browser isolation?
RBI executes web sessions in disposable remote containers and streams only a safe visual or reconstructed representation to the user’s browser.
Malicious code never runs locally, and the container is destroyed afterward removing the endpoint from the blast radius of web-borne attacks.
What is the best browser isolation solution in 2026?
Menlo Security leads as the pure-play; Zscaler and Cloudflare are the strongest platform-included options; Ericom serves high-assurance niches; Authentic8 owns the investigations use case. Most buyers should first check what their existing SSE already includes.
Pixel streaming or DOM reconstruction?
Pixel streaming renders everything remotely and streams images strongest guarantees, most latency, breaks least content logically but feels least native. DOM reconstruction rebuilds a sanitized page locally feels native, slightly larger theoretical surface. Serious vendors mix both by policy; test both on your workloads.
Does RBI stop phishing?
It stops the payload side — drive-by malware, malicious scripts, weaponized downloads. A user can still type credentials into a convincingly rendered phishing page. Isolation plus read-only rendering of suspicious pages helps; phishing-resistant MFA finishes the job.
RBI or an enterprise browser?
Different populations: enterprise browsers govern managed users at native speed; RBI covers unmanaged devices, unknown sites, and high-risk roles without touching the endpoint. Increasingly deployed together, policy-routed.
How much does browser isolation cost?
Per user per year. Platform-included isolation (Zscaler, Cloudflare, Skyhigh tiers) is cheapest if you already own the platform; pure-play Menlo and specialist Authentic8 price at a premium reflecting depth.
Selective policies cut cost dramatically versus isolate-everything.
The Verdict
Check your SSE first — you may already own isolation and merely need to write the policies.
Buy Menlo when isolation is the strategy, Cloudflare for the fastest meaningful win, Authentic8 for investigation teams, and Ericom for high-assurance corners with a status check.
Route only risky traffic through it, put a file pipeline behind it, and pair it with phishing-resistant MFA, because pixels don’t protect passwords.
Related reading on Cyber Security News:
• Top 10 Best Enterprise Browsers
• Top 10 Best Secure Web Gateway (SWG) Solutions
• Top 10 Best Network Sandboxing Solutions
• Top 10 Best DNS Security Solutions
• Passwordless Authentication Solutions
• Top 10 Best Zero Trust Security Vendors
• Top 10 Best SDP Solutions
• Top 10 Best Antivirus (Endpoint Protection) Software for Business
• Top 10 Best Ransomware Protection Solutions
• 10 Best Cloud Security Tools
• Top 10 Best Protective DNS Services
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