Island
Island provides enterprises a secure browser that balances productivity with comprehensive security controls.
Island is an enterprise-grade secure browser built on Chromium that replaces legacy security tools like SASE platforms and VDI by embedding security controls directly into the browser. It enables organizations to enforce granular, context-based policies that allow data to flow freely between enterprise apps while preventing unauthorized sharing, data leakage, and malicious activities. The browser provides last-mile controls over print, downloads, screenshots, and copy/paste even outside the browser environment, giving enterprises complete visibility and governance over user activity.
Problem solved
Enterprises struggle to balance employee productivity with data security, lacking native controls to prevent unauthorized data sharing while maintaining visibility into malicious activities across web and SaaS applications.
Target customer
Fortune 1000 enterprises, mid-market companies, government agencies, and higher education institutions requiring secure access to SaaS applications, zero-trust network access, BYOD support, and contractor onboarding.
Founders
M
Mike Fey
CEO & Co-Founder
Previously CEO of D2iQ (formerly Mesosphere), President and COO at Blue Coat Systems (acquired by Symantec for $4.65B in 2016), and held senior roles at Symantec in cybersecurity leadership.
D
Dan Amiga
CTO & Co-Founder
Founder and CTO of Fireglass (acquired by Symantec for $250M in 2017), inventor of web isolation technology, former Microsoft security lead, and served five years in Israel's Unit 8200 cyber intelligence unit.
Funding history
Seed
$20M
Unknown
Led by Unknown
· Unknown
Series A
$100M
February 2022
Led by Insight Partners
· Unknown
Series B
$115M
March 2022
Led by Insight Partners
· Unknown
Series B Extension
$10M
July 2022
Led by Unknown
· Unknown
Series B Extension
$60M
November 2022
Led by Unknown
· Unknown
Series C
$100M
October 2023
Led by Prysm Capital
· Unknown
Series D
$175M
April 2024
Led by Unknown
· Unknown
Series E
$250M
March 26, 2025
Led by Coatue Management
· Canapi Ventures, Capital One Ventures, Cisco Investments, Citi Ventures, Cyberstarts, EDBI, Georgian, Insight Partners, Prysm Capital, Sequoia Capital, ServiceNow Ventures, Stripes
Total raised:
$810M
Pricing
Per-user subscription model, typically charged monthly. On AWS Marketplace, a 12-month contract costs $250,000. Custom pricing available for enterprise deployments.
Notable customers
Mattress Firm, Swiss Life, Fiverr, and 447 additional enterprise customers across Fortune 1000, mid-market, government, and higher education sectors.
Integrations
Amazon Web Services, Salesforce, Google Workspace, AWS Marketplace
Tech stack
Alpine.js (JavaScript frameworks)
jQuery (JavaScript libraries)
Swiper (JavaScript libraries)
Vimeo (Video players)
Open Graph
Module Federation
Contentful (CMS)
Linkedin Insight Tag (Analytics)
Google Analytics (Analytics)
Google Font API (Font scripts)
Nginx (Reverse proxies)
OpenResty (Web servers)
Varnish (Caching)
Google Workspace (Email)
Google Hosted Libraries (CDN)
Unpkg (CDN)
Linkedin Ads (Advertising)
Webflow (Page builders)
Salesforce (CRM)
Amazon Web Services (PaaS)
CookieYes (Cookie compliance)
Website
Competitors
SquareX
Browser security startup with focus on phishing and threat prevention, lacks Island's comprehensive enterprise policy and data loss prevention controls.
Menlo Security
Cloud-delivered browser security using remote browser isolation, while Island embeds controls directly in a Chromium-based browser for better performance and integration.
Seraphic
Smaller competitor with narrower feature set and market presence compared to Island's comprehensive enterprise browser platform.
Red Access
Legacy browser security player without native integration of modern zero-trust and data governance capabilities.
Why this matters: Island achieved a $4.8B valuation in under five years with $810M in funding by solving a critical enterprise problem—replacing multiple legacy security tools (SASE, VDI, web filtering) with a single modern platform. Its founders' track records (Fey's exit of Blue Coat for $4.65B, Amiga's Fireglass acquisition for $250M) and strong investor backing (Coatue, Sequoia, Insight Partners) position it as a likely IPO candidate in the enterprise security space.
Best for: Enterprise security and IT teams seeking to replace legacy SASE platforms, VDI solutions, and web filtering tools with a modern, native browser that maintains security without sacrificing employee productivity.
Use cases
Secure BYOD and Remote Work
Organizations enable employees to use personal devices for work while enforcing last-mile controls on data (screenshots, downloads, copy/paste). Island's context-based policies allow productivity tools to function while preventing data exfiltration, making BYOD viable at enterprise scale.
Contractor and Third-Party Access
Companies can onboard contractors and partners in minutes instead of weeks by provisioning Island browsers with granular access policies. The browser provides complete visibility into their activities and prevents unauthorized data sharing, reducing security risks during extended third-party engagement.
M&A Transition and Integration
During mergers and acquisitions, Island enables rapid and secure access to combined systems without lengthy VDI deployments. Granular policies manage data flow between legacy and new systems while maintaining audit trails and preventing data leakage during integration chaos.
Zero-Trust Network Access
Island replaces traditional VPN and network segmentation by implementing zero-trust at the browser layer, verifying every access request and enforcing policies based on context (user identity, device, location, application). This reduces VPN complexity while improving security posture and user experience.
Alternatives
Menlo Security
Choose Menlo if you prefer remote browser isolation (RBI) architecture; choose Island if you want native browser controls with better performance and lighter infrastructure footprint.
Zscaler SASE
Zscaler is broader network security platform; Island is purpose-built for browser-layer control and visibility, offering deeper last-mile enforcement for data loss prevention.
Microsoft Defender for Cloud Apps
Microsoft's solution focuses on SaaS app visibility and control; Island provides comprehensive browser-level controls including last-mile prevention for all web activity and data exfiltration.
FAQ
What does Island do? +
Island is an enterprise-grade secure browser that replaces traditional security tools like SASE platforms and VDI. It embeds security controls directly into a Chromium-based browser, enabling organizations to enforce granular policies that allow productivity while preventing data leakage, with last-mile controls over print, downloads, screenshots, and copy/paste.
How much does Island cost? +
Island uses a per-user, per-month subscription model. On AWS Marketplace, a 12-month contract including the browser and management console costs $250,000. Enterprise pricing is custom and tailored to deployment scale and specific requirements.
What are alternatives to Island? +
Top alternatives include Menlo Security (cloud-delivered remote browser isolation), Zscaler SASE (broader network security platform), Microsoft Defender for Cloud Apps (SaaS app-focused control), and SquareX (browser security focused on threat prevention).
Who uses Island? +
Island serves Fortune 1000 enterprises, mid-market companies, government agencies, and higher education institutions. Notable customers include Mattress Firm, Swiss Life, and Fiverr. The platform is used for secure SaaS access, zero-trust network access, BYOD enablement, contractor onboarding, and M&A transitions.
How does Island compare to Menlo Security? +
Both provide enterprise browser security, but with different architectures. Menlo uses cloud-delivered remote browser isolation (RBI), while Island embeds controls directly in a Chromium browser. Island offers better performance and lighter infrastructure; Menlo provides stronger isolation for highly sensitive environments. Island excels at last-mile data loss prevention and policy enforcement.
Tags
enterprise security
secure browser
data loss prevention
zero-trust
SASE replacement
VDI replacement
last-mile controls
BYOD