Comparing Browser Security vs RBI

Seraphic is an innovative browser agent that seamlessly deploys into any traditional or AI browser, instantly turning it into a Secure Enterprise Browser (SEB).

Understanding the Basics

Modern enterprises run on the browser, yet the browser remains the softest spot in the enterprise’s attack surface. Organizations are turning to Secure Enterprise Browser (SEB) solutions to protect their identities, data, and AI adoption, reducing dependency on legacy solutions, such as Remote Browser Isolation (RBI), SSE, and VDI. Within the Secure Enterprise Browser domain, there are several approaches, such as Browser Security solutions, Dedicated Browsers, and Extension-Based solutions.

What is Seraphic Secure Enterprise Browser

Seraphic’s Secure Enterprise Browser is powered by native JavaScript Agent (JSA) enforcement, giving precision, pre-execution, and runtime control inside the browser. Seraphic stops zero and n-day exploits, advanced phishing, token/session theft, in-session exfiltration, and data loss before it happens – with no workflow change. Seraphic is injected into existing browsers or offered as a hardened browser for BYOD/contractors. The lightweight, policy-driven JavaScript component operates in the page context to govern web APIs and data paths in real-time, enabling prevention, not just detection. It augments the existing browser with an injected, standards-compliant JSA, preserving native behavior and UX, with near-zero latency.

What is RBI

Remote Browser Isolation (RBI) is a technology that isolates browsing activity from local devices. When a user accesses a webpage, RBI intercepts the request, executes all page contents, and opens the page in an isolated environment on the remote server. A sanitized version of the page is then streamed back to the user’s device. Some RBI solutions also sanitize downloads and block risky interactions. RBI can introduce performance challenges, such as increased latency and bandwidth use, and may create compatibility issues with certain web applications or workflows.

Why RBI Falls Short

While RBI can reduce exposure to web-based threats, it is far from a complete solution. Many enterprises discover that RBI introduces new challenges that impact user experience, drive-up costs, and leave critical security gaps unaddressed. As a result, organizations often struggle to balance security with usability and scalability. RBI causes shortfalls in:

Incomplete security coverage

RBI primarily focuses on unknown and risky websites but does little to address other critical risks, such as data exfiltration, identity-centric threats, or abuse of AI tools.

Degraded user experience

RBI introduces noticeable latency, resulting in slower browsing, poor video quality, broken web apps, and a loss of native browser features like copy/paste, file downloads, and extension use.

High cost and complexity

Implementing RBI requires significant infrastructure to stream every browsing session, making it expensive and difficult to scale.

Lack of flexibility for modern workflows

RBI can restrict the use of web apps, browser extensions, and SaaS integrations, making it difficult for teams to work efficiently with today’s most relied-upon systems.

Challenges with data control

RBI provides limited visibility into how sensitive data is accessed, shared, or stored, making it difficult for organizations to maintain strong data governance.

Limited adoption

When RBI impacts productivity, employees often find ways to bypass it, undermining its security value and reducing overall protection.

Not BYOD-friendly

Extending RBI consistently to contractors, personal devices, and unmanaged endpoints is challenging, leaving gaps in security coverage for modern, distributed workforces.

How Seraphic Secures the Browser

Seraphic delivers native, patented JavaScript Security Agent (JSA) enforcement that adds precise pre‑execution and runtime control inside any browser. It prevents zero‑ and n‑day exploits, advanced phishing, token and session theft, and in‑session data exfiltration before it happens, with inline DLP and governance and no workflow changes. It also adds AI‑aware protections to govern prompts, responses, and model connections in web and SaaS workflows.

At its core is a small, lightweight, policy‑driven JavaScript component that runs in the page context to instrument and govern web APIs and data paths in real time. Rather than replacing the browser, it augments it with a standards‑compliant JSA, preserving native behavior and user experience with near‑zero latency.

Seraphic places a JavaScript‑based abstraction layer above the browser’s JavaScript engine, effectively its kernel. From this vantage point, it exposes execution and memory planes to enable pre‑execution control, exploit prevention, and fine‑grained data governance across any browser and Electron app—without requiring users to switch browsers.

Identity‑ and app‑aware policies follow users across SaaS and web apps, including unmanaged devices and multiple browsers. DLP is enforced inline with granular controls for fields, forms, clipboard, downloads, uploads, and screenshots, with smart redaction and masking. AI security extends this with guardrails for AI usage, prevention of sensitive‑data exposure to AI platforms, and allow‑/deny‑listing of AI tools.

Because enforcement happens in the page context, controls remain consistent across versions, and browsers (traditional and Agentic), and are resilient to upstream browser changes. The experience is user‑friendly, with inline guidance and just‑in‑time prompts that remediate issues without breaking workflows. Deployment is frictionless and lightweight, requiring no heavy endpoint agents and with no impact on user browsing experience.

Seraphic is available in flexible delivery models: inject into existing browsers via extension, embed within an existing browser build, use agentless or workspace‑level paths, or deploy a hardened Seraphic browser for BYOD and contractor use.

Area of Focus	RBI Limitations	Seraphic approach
Browser-native security	Cannot fully prevent voluntary data loss. Only isolates activity and often fails against sophisticated social engineering or identity attacks	Embeds real-time, behavioral threat detection and policy enforcement directly inside any browser. Stops exploits and identity theft in the browser layer, with seamless user experience
Granular data governance and access control	Poor compatibility with complex or highly interactive web apps like plugins, JavaScript, or advanced UI Issues with session caching, some user functionalities may be degraded/blocked in isolated environment	Delivers contextual, policy-driven access management at the browser session — considers user identity, device security, network context, and location, integrates Zero Trust principles without traffic redirection or proxies, maintains visibility across SaaS/internal apps and all devices
Performance and user experience	High latency and greater bandwidth usage due to remote rendering; content is streamed from cloud servers, often resulting in downgraded performance	Enforces security inside the browser, maintaining local performance with no latency, supports both managed and unmanaged devices, prevents attacks without interrupting workflows or adding bandwidth load
Advanced Threat Prevention	RBI focuses on isolating sessions but is not designed to prevent identity phishing, credential theft, or modern in-browser attacks	Uses real-time detection, blocks zero-days, cross-site scripting, HTML smuggling, and prevents memory corruption exploits
Deployment Flexibility and Coverage	Coverage for unmanaged or BYOD devices depends on the specific deployment model and may require additional configuration or agents, meaning not all apps or devices are always fully protected.	Deploys quickly via extension or browser agent, supports any browser or device (work-managed or BYOD), protects SaaS, internal, and local web apps