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Remote Browser Isolation (RBI)

Open the unknown web. Safely.

Remote Browser Isolation balances security and user productivity by allowing access to unknown websites in a safe, isolated environment.

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Todayโ€™s Challenges

Risky sites reach the endpoint.

Malicious sites reach the endpoint
Code executes on the endpoint
The block-or-allow dilemma
No visibility into risky access

Uncategorized sites are dangerous

Undefined and uncategorized sites are frequently used for phishing campaigns and ransomware delivery.

Code executes on the endpoint

Web browsing runs code locally on the user’s device, opening the door to malware, credential theft, and other malicious activity.

The block-or-allow dilemma

Outright blocking uncategorized sites floods IT with access tickets; allowing them exposes the endpoint to risk.

No visibility into risky access

Admins lack insight into which risky sites are loaded โ€” and which users access them most frequently.

Malicious sites

Local code

Block-or-allow

No visibility

Our approach

Render the risk away.
Keep people working.

Risky websites and unmanaged content shouldnโ€™t have to touch your endpoints. Cato RBI executes web sessions in an isolated cloud container and streams only safe rendering to the user, neutralizing browser-borne threats while people keep working normally.

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Isolate uncategorized sites

Automatically launch undefined and uncategorized sites in a remote, isolated session.

Render, donโ€™t execute

Stream a graphical representation of web content to the userโ€™s browser โ€” site code never touches the endpoint.

Destroy and monitor

Tear down the containerized session at the end, and track RBI events by destination, user, and volume.

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Stop Trusting Your AI Browser

How it works

Remote Browser Isolation (RBI) Capabilities

Cloud-delivered safe browsing

Instant deployment, no hardware

Cato RBI can be enabled in just a few clicks for all locations and users, with no additional hardware or software to deploy.

Enable in a few clicks for all users and locations

No additional hardware or software

Uncategorized sites auto-isolated in a remote session

Complete isolation

Reduce the risk of web-based attacks

RBI isolates website code from the endpoint by rendering the site in a containerized environment that is destroyed completely at the end of the session.

Render sites in a containerized environment

Session destroyed completely when it ends

A safe alternative to outright blocking sites

Visibility & fine-tuning

Manage and control risky web access patterns

Cato lets admins filter the unified event log and track RBI events by destination, user identity, volume, and more.

Track RBI events by destination, user, and volume

Fine-tune RBI policies to enterprise needs

URL simulator loads any site for investigation

See it in action

Watch how Cato does it

Remote Browser Isolation Video Demo

Video

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Customer Stories

Customers love Cato

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Remote Browser Isolation provided a niche capability for reducing our attack surface by isolating access to uncategorized sites that fall outside Catoโ€™s existing categories. For those unknown sites, we needed a way to protect ourselves, so we started the RBI journey.

IT Leader

Global Trading Company

IT Leader

Global Trading Company

Remote Browser Isolation provided a niche capability for reducing our attack surface by isolating access to uncategorized sites that fall outside Catoโ€™s existing categories. For those unknown sites, we needed a way to protect ourselves, so we started the RBI journey.

IT Leader

Global Trading Company

Network & Infrastructure Engineer

Midsize Business Law Firm

I will say, their RBI and yours are very different. Their RBI is basically a proxy and really just does TLS or content inspection, while your RBI is more like a sandboxโ€”the session runs somewhere else and you canโ€™t download files, providing an extra layer of security.

Network & Infrastructure Engineer

Midsize Business Law Firm

IT/Security Leader

Home Services Company

To be fair, Catoโ€™s integration isnโ€™t just going out and buying Island and bolting it on and calling it RBI. Thatโ€™s really useful as a differentiator compared to competitors.

IT/Security Leader

Home Services Company

IT/Security Leader

Global Industrial Company

So you already have like a thousand points because of thatโ€”because with all the other RBI solutions, you have to install another browser, but with yours, you donโ€™t.

IT/Security Leader

Global Industrial Company

IT Leader

Industrial Services Organization

I think that with the adoption of RBIโ€”not the sandbox, but just RBIโ€”it has helped us resolve a lot of tickets where we previously had to manually recategorize many Italian websites that are not used often by people. These sites were typically uncategorized or undefined. We also created a specific policy for those two categories.

IT Leader

Industrial Services Organization

Get a live demo

Secure every interaction across the enterprise, cloud, and AI with the only purpose-built SASE platform.

What to expect

15โ€“30 minute session with a SASE product expert

Discuss your use cases and how we can help

Live product demonstration where applicable

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What’s new

Latest resources and insights

FAQS

Answers to common questions

How does Cato RBI isolate risky browsing without disrupting users?3 questions

What is Remote Browser Isolation and why does it matter for enterprise security?

Remote Browser Isolation (RBI) protects endpoints by rendering web content in a containerized cloud environment rather than executing site code locally on the userโ€™s device. This eliminates the risk of malware, credential theft, and other web-based attacks that occur when browsing runs directly on the endpoint. The containerized session is completely destroyed at the end of each browsing session.

How does Cato RBI handle uncategorized or unknown websites?

Cato RBI automatically routes uncategorized and undefined websites into a remote, isolated session. Instead of forcing administrators to choose between blocking a site entirely or allowing it to run on the endpoint, RBI provides a safe middle ground that keeps users productive while containing any potential risk.

How does RBI compare to simply blocking access to risky or unknown websites?

Outright blocking unknown sites protects against threats but disrupts productivity when users have legitimate reasons to visit uncategorized pages. RBI serves as a safe alternative by allowing access while ensuring that site code never reaches the endpoint. Users get a streamed graphical representation of the content rather than direct execution of potentially malicious code.

How does Cato RBI fit into broader access and security architecture?2 questions

How does Cato RBI fit into a broader security architecture?

Cato RBI is part of the converged Cato SASE Cloud platform. This means it operates alongside other networking and security capabilities within a single platform rather than as a standalone point product, giving organizations consistent policy enforcement and visibility across all users and locations.

What is the difference between Remote Browser Isolation and an Enterprise Browser?

RBI is a threat prevention capability that isolates browsing sessions to prevent malicious web content from reaching the endpoint. An Enterprise Browser, such as the Cato Enterprise Browser, is a managed workspace designed to provide secure, policy-controlled access to SaaS and private applications, with granular controls like restricting file downloads or copy-paste actions on unmanaged devices. The two serve complementary but distinct security purposes.

How does Cato RBI deploy, monitor, and support enterprise users?3 questions

Does deploying Cato RBI require new hardware or software agents?

No. Cato RBI is cloud-delivered and can be enabled in just a few clicks for all locations and users. There is no additional hardware to procure, no endpoint agents to install, and no browser plugins required.

What visibility does the platform provide into isolated browsing activity?

Cato RBI tracks browsing events by destination, user, and volume. Administrators can monitor RBI activity and use tools such as the RBI URL simulator to review how specific sites are handled within the platform.

Which desktop browsers are supported for isolated sessions?

Cato RBI supports major desktop browsers including Chrome, Edge, Firefox, and Safari. Mobile browsers are not currently supported.