Semperis vs Island Technology
Side-by-side comparison of AI visibility scores, market position, and capabilities
Hoboken NJ Active Directory security platform; raised $200M+; identity threat detection and response for AD, Entra ID, and hybrid identity environments.
About
Semperis is an identity security company founded in 2014 and headquartered in Hoboken, New Jersey. The company focuses on securing and recovering Active Directory (AD) and Azure Active Directory (Entra ID) environments, which represent the most critical identity infrastructure in the majority of enterprises. Active Directory is the primary authentication and authorization backbone for Windows environments globally, and it has become one of the most attacked components in modern ransomware and nation-state intrusions — attackers that compromise AD can gain access to every system in an organization.\n\nSemperis raised $200 million in a Series C round led by JP Morgan Growth Equity Partners and Vision Blue, valuing the company at approximately $1 billion. Its platform covers three domains: Directory Services Protector (DSP) for continuous AD threat monitoring and automated attack rollback; AD Security Assessment for evaluating the attack surface of AD configurations; and Active Directory Forest Recovery (ADFR) for rapid recovery of AD from cyberattacks. The ADFR product addresses a critical gap: most organizations' backup and recovery processes are not designed to recover AD cleanly from a ransomware attack that corrupted or encrypted AD data.\n\nSemperis's Purple Knight tool, a free Active Directory security assessment, has been downloaded by more than 10,000 organizations and is widely used by IT and security teams to benchmark their AD attack surface. The company's deep expertise in AD-based attack techniques — including DCSync, Golden Ticket, Kerberoasting, and pass-the-hash attacks — informs its detection engine, which monitors AD events in real time and can automatically roll back unauthorized changes before they cause damage.
Dallas TX enterprise browser platform; raised $490M+; secure Chromium-based browser giving IT full control over web application access and data flows.
About
Island Technology is an enterprise browser company founded in 2020 and headquartered in Dallas, Texas. The company was founded by Michael Fey and Dan Amiga to reimagine how enterprises secure access to web applications by moving security controls into the browser itself rather than relying on network perimeters that have become irrelevant in a cloud and remote-work era. Island built an enterprise browser based on the Chromium engine that is functionally identical to Google Chrome for end users but gives IT and security teams complete control over what data can be accessed, copied, printed, screenshotted, or uploaded within each web application.\n\nIsland raised $490 million across multiple funding rounds including a $250 million Series D, valuing the company above $3 billion. The platform addresses use cases across contractor and third-party access, BYOD environments where employees use personal devices to access corporate applications, and zero-trust access control for web-based SaaS applications. Because the enterprise browser sits directly in the data path between the user and every web application, it can enforce granular policies — for example, preventing a contractor from copying data from Salesforce while still allowing them to read it — without requiring VPNs, virtual desktops, or complex network configurations.\n\nIsland's browser also provides deep telemetry on user activity within web applications, enabling security teams to detect risky behavior, investigate incidents, and conduct phishing-resistant authentication. It integrates with major identity providers for SSO, with DLP platforms for data classification, and with SIEM tools for activity logging. The company has attracted customers in financial services, healthcare, legal, and technology sectors where sensitive data access by third parties and remote workers is a significant security challenge.
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