What Is Island Enterprise Network? How Browser-First SASE Works

Island Enterprise Network is Island’s SASE architecture that moves enforcement from the network proxy layer into the browser and endpoint, so most traffic reaches its destination directly without being routed through a distant cloud inspection point. It delivers ZTNA, SWG, CASB, DLP, RBI, and DEX from a single policy engine, enforced at the moment of interaction. Most sessions go direct. Inspection happens only when it genuinely adds value.

What is Island Enterprise Network and how is it different from traditional SASE?

Island Enterprise Network is the network and connectivity component of Island’s Enterprise Platform, launched in March 2026. It offers a full secure access service edge (SASE) stack, including private access, secure web gateway, data loss prevention, cloud access security broker, remote browser isolation, and digital experience monitoring, all managed from a single policy engine.

The key architectural difference from traditional SASE is where enforcement happens. Legacy SASE products from vendors like Zscaler, Netskope, and Palo Alto Prisma route all traffic through cloud-based proxy nodes, decrypt and inspect it there, then forward it to its destination. Island Enterprise Network does the opposite: it enforces policy inside the browser and at the device level, before data leaves the session. The network layer is used selectively, only when routing or inspection adds value that local enforcement cannot provide.

Island calls this the “Perfect Packet” architecture. For most sessions, there is no proxy detour. Traffic goes direct. Security travels with the user, not through a centralized chokepoint.

Why does SASE backhauling fail for modern enterprise work?

Proxy-first SASE was designed for an era when corporate apps lived in data centers and most enterprise traffic ran over HTTP. That model required routing everything through a central inspection point because there was nowhere else to enforce policy. The architecture made sense in 2010. It no longer matches how work actually moves.

Three specific failures define the gap today.

First, modern encryption breaks proxy inspection. The majority of web traffic now runs over TLS 1.3, and HTTP/2, HTTP/3, and QUIC are standard in every major browser. Certificate pinning prevents decryption for a growing list of applications. Post-quantum cryptographic implementations are already deployed in Chrome and Firefox. These protocols are structurally incompatible with legacy break-and-inspect architectures. When a proxy can’t decrypt traffic, it exempts it from inspection. Every exemption is a session outside the security perimeter.

Second, latency and friction drive workarounds. When enforcement depends on routing every session through a distant cloud node, users feel it. CRM sessions lag. Video calls stutter. SaaS workflows break when proxy inspection interferes with modern application behavior. Users find ways around the friction. Those workarounds expand the attack surface.

The numbers confirm the gap. According to LayerX’s Browser Security Report 2025, 77% of enterprise employees paste data into GenAI prompts, and 82% of that activity happens through personal, unmanaged accounts. None of it passes through a corporate proxy. None of it is visible to Zscaler, Netskope, or any network-layer inspection tool.

Across all enterprise browser activity, organizations have no visibility into 89% of AI usage in the organization, because 67% of employees access GenAI tools via personal accounts and a further 21% use corporate accounts without SSO. The proxy never sees the session at all.

Third, AI made the visibility gap impossible to ignore. A user pastes internal data into a ChatGPT prompt. An AI agent calls an external tool via MCP. Generated output moves into a code repository. None of this travels the network in ways a proxy can interpret. Network inspection sees connections. It cannot see clipboard actions, tenant context, prompt content, or what a user typed into a browser input field. Traditional SASE vendors respond the only way their architecture permits: block AI or allow it. Neither option governs it.

The result is a browser security gap that sits outside every traditional security control, regardless of how mature the SASE stack is.

How does Island Enterprise Network enforce security without a proxy?

Island Enterprise Network moves the enforcement point from the network to the browser and endpoint. For browser traffic, policy is applied natively at the DOM layer, before content renders and before data leaves the session. Island operates inside Chromium, so it sees rendered content and user intent directly, not inferred from packet metadata. There is no traffic rerouting, no TLS interception, and no break-and-inspect.

This works because Island controls the browser itself. Island’s Enterprise Browser is built on Chromium. Island’s Enterprise Browser Extension extends similar capabilities to Chrome and Edge without requiring a browser switch. Both give Island direct access to the presentation layer: the rendered page, the input field, the clipboard event, the file upload dialog. These are the signals proxy SASE cannot reach.

For out-of-browser traffic, desktop applications, background services, and legacy protocols, Island Desktop intercepts traffic at the device level and steers it selectively to Island’s global network for inspection, only when policy requires it. WireGuard-based tunneling handles encrypted transport across all ports and protocols.

Identity, device posture, geolocation, application context, and user actions are evaluated locally, in real time, at the moment of interaction. One policy engine governs browser, endpoint, and network. There is no service chaining across separate consoles or separate inspection engines.

Island claims that up to 90% of sessions go direct, with no backhaul. Deployment to managed and unmanaged devices takes as few as five minutes. Application access is up to 10 times faster when traffic takes the direct path rather than routing through a proxy node.

What SASE capabilities does Island Enterprise Network include?

Island Enterprise Network delivers the full SASE stack from a single control plane. Each capability is enforced at the browser and endpoint layer by default, with the network used as a fallback for scenarios where device-level enforcement is not possible. The platform covers SaaS security and web traffic through the same policy engine, with no separate consoles or rule sets.

Island Private Access (ZTNA). Application-level zero trust access for web and non-web applications, aligned with NIST SP 800-207. Access is granted per application, per session, based on user role, device posture, location, and identity, evaluated continuously rather than only at login. Private resources remain unreachable from the internet. Island Desktop extends the same model to all ports and protocols including SSH, RDP, SMB, SIP, and QUIC via WireGuard-based tunnels.

Secure Web Gateway (SWG). Browser traffic is enforced at the DOM layer with URL filtering, anti-malware, anti-phishing, and DNS security applied before pages render. No proxy detour. No TLS inspection. For out-of-browser traffic, Island Desktop steers selectively to Island’s cloud SWG, applying SSL/TLS inspection only when policy requires it.

Data Protection (DLP). Island protects data at the DOM layer before encryption. Coverage extends to clipboard events, file uploads, downloads, and screenshots. Detection uses pattern matching, exact data match (EDM), OCR, and AI classifiers. The same policy applies across browser, endpoint, and network channels without requiring separate configurations.

SaaS API Protection (CASB). Visibility and control into SaaS environments through native APIs, monitoring files, permissions, configurations, and sharing activity without rerouting traffic. The same DLP detectors used inline apply out-of-band to cloud-stored content. Remediation can be automated, admin-reviewed, or user-driven.

AI and Agentic AI Governance. Island governs AI at the point of interaction, before data leaves the device. Content-aware detection inspects prompts, uploads, and data in real time across tools like ChatGPT, Microsoft Copilot, and Gemini. For agentic AI, tool calls, MCP access, and agent-to-agent communication are governed at the presentation layer and logged with a full audit trail.

Remote Browser Isolation (RBI). Local isolation runs natively inside the browser, disabling high-risk Chromium APIs on uncategorized sites. Cloud-based RBI is invoked dynamically only for the small subset of sites that require those APIs to function.

Digital Experience Monitoring (DEX). Application performance, device health, network latency, and resource utilization are captured in the browser and via Island Desktop. Because enforcement does not distort the traffic path, DEX reflects actual user experience, not a proxy-routed approximation.

How does Island Enterprise Network compare to Zscaler, Netskope, and Cloudflare?

Island Enterprise Network and traditional SASE vendors are solving the same underlying problem: how do you enforce security policy for a distributed workforce using SaaS and AI tools from any device? The architectures diverge on where enforcement happens, and that difference has real consequences for coverage, performance, and AI governance.

Zscaler routes all traffic through its Zero Trust Exchange cloud, applying inline inspection at scale across 150+ data centers. It is the most mature proxy-first SSE platform available. The tradeoff is the inspection model: Zscaler decrypts, inspects, and re-encrypts sessions at the network layer. It cannot see clipboard actions, DOM-level content, or what a user typed into a ChatGPT prompt. AI governance is limited to allow/block decisions at the connection level. Zscaler works on every device but sees far less of what happens inside each session.

Netskope differentiates on data protection, with deep inline CASB and instance-aware DLP policies that distinguish corporate from personal accounts. Its NewEdge network is purpose-built for inline security processing. Netskope’s visibility is richer than Zscaler’s for SaaS DLP scenarios, but it shares the same architectural limitation: enforcement lives in the cloud proxy, not the browser. Actions that happen inside the page, before data hits the network, remain invisible.

Cloudflare One offers the largest global edge network (330+ cities) and the simplest ZTNA deployment experience in the industry. It is the fastest to stand up and the most accessible for smaller organizations. Its CASB and DLP capabilities are newer and less mature than Netskope or Zscaler. Like both, Cloudflare enforces at the network layer, not the browser layer.

Island Enterprise Network occupies a different enforcement plane entirely. Because it operates inside the browser and at the endpoint, it sees what proxy SASE cannot: rendered content, clipboard events, prompt text, file transfers between apps, and agentic tool calls. The tradeoff is deployment model. Island requires either a browser switch (to Island’s Chromium-based browser) or an extension on Chrome or Edge. Organizations that need browser-level enforcement without asking users to change browsers have a separate category of options to evaluate.

Who should consider Island Enterprise Network, and when does a browser extension approach make more sense?

Island Enterprise Network is a strong fit for organizations already committed to consolidating their security stack around a single platform and willing to standardize on Island’s browser or extension as the primary enforcement point. The deployment model requires either migrating users to Island’s Chromium-based browser or deploying the Island Extension on Chrome or Edge. For organizations with tight browser governance or standardized endpoint environments, that is a manageable ask. For organizations with heterogeneous browser environments, contractor workforces using personal devices, or teams that need security across Safari, Firefox, and other Chromium-based browsers including ChatGPT Atlas and Perplexity Comet, the deployment surface is broader and the path is more complex.

The browser-level enforcement gap is real regardless of which SASE vendor an organization runs. Proxy SASE does not see inside browser sessions. That gap is particularly acute for BYOD and unmanaged device scenarios, where agents and certificates that traditional SASE requires often cannot be installed at all, and for AI governance, where the relevant activity happens in a browser input field rather than on the network.

Organizations evaluating how to close this gap have two paths. The first is Island’s approach: a purpose-built enterprise browser or extension that gives a single vendor control over the browser itself. The second is an Enterprise Browser Extension that works on any browser users already have, without requiring a browser change, network architecture adjustments, or a migration project.

How LayerX Solves This

The challenge Island Enterprise Network addresses, proxy SASE cannot see inside browser sessions, is the same problem LayerX was built to solve. LayerX’s agentless AI and Browser Security Platform delivers last-mile visibility and real-time enforcement as an Enterprise Browser Extension that works across any browser employees already use, including Chrome, Edge, Safari, Firefox, and any Chromium-based browser, without asking anyone to change browsers or restructure network architecture. For organizations that need browser-level AI usage control, shadow AI discovery, AI DLP, and identity governance across personal and corporate accounts, LayerX provides risk-adaptive smart guardrails at the point of interaction, from monitor through warn through prevent through redact, with no impact on user experience. The enforcement model reaches the same last-mile layer as Island Enterprise Network from a different deployment direction: instead of controlling the browser, LayerX extends policy enforcement into any browser already running in the enterprise.

Request a Demo

How is Island Enterprise Network deployed?

Island Enterprise Network is designed for incremental deployment, with each phase delivering standalone value from day one.

Phase 1: Island Extension. Immediate policy control on existing Chrome or Edge browsers. No network reconfiguration. No rip-and-replace. Governance starts on day one. This is the fastest path to browser-level enforcement for organizations that do not want to migrate users to a new browser immediately.

Phase 2: Island Enterprise Browser. Built on Chromium with native support for IPv6, TLS 1.3, HTTP/3, and post-quantum cryptography. Full DOM-level enforcement. No bypass lists required. Users get a branded browser experience with productivity tools built in.

Phase 3: Island Desktop. Extends the same policy model to desktop applications, legacy protocols, and device-level traffic. One identity. One posture evaluation. One policy fabric across browsers and devices.

Phase 4: Explicit proxy and IPsec. For environments where the browser or endpoint agent cannot be deployed, Island supports explicit proxy (PAC file) for agentless managed deployments and IPsec tunnels for site-level coverage, including branch locations and IoT/OT infrastructure.

Island’s global network runs across three hyperscalers (GCP, AWS, Azure) with dual independent network stacks and 100+ points of presence globally. Each PoP runs the full service stack. Clients and connectors connect to multiple PoPs simultaneously, so a regional cloud outage does not cause user-facing disruption.