Key Takeaways
- Silverfort is acquiring Israeli AI‑driven identity security startup Fabrix; the deal value is undisclosed but estimated in the tens of millions of dollars.
- Fabrix’s 14‑person team, including its founders and senior engineers, will join Silverfort, boosting the latter’s workforce to roughly 600 employees worldwide.
- Fabrix was founded in 2025 by Raz Rotenberg (former Run:ai engineer) and Ofir Yakovian (ex‑Orca Security/Microsoft Entra tech lead), with an R&D VP who served as chief architect for Microsoft Defender for Cloud.
- The startup raised $8 million in seed funding from prominent investors and industry veterans, including Norwest, toDay Ventures, Jibe Ventures, and executives from Google, Palo Alto Networks, Cyera, Microsoft, Tenable, and Nvidia.
- Post‑acquisition, the combined companies will build a real‑time, AI‑powered identity protection and access‑control engine that governs access for human, non‑human, and AI‑agent identities.
- This marks Silverfort’s second acquisition in under a year, following its purchase of cloud‑identity specialist Rezonate in November 2024, and reflects a strategic push to address the growing complexity of AI‑era access decisions.
Acquisition Overview
Israeli cybersecurity unicorn Silverfort has entered into a definitive agreement to acquire Fabrix, a startup that leverages artificial intelligence to secure identities. While the financial terms remain confidential, industry analysts place the transaction value in the low‑to‑mid tens of millions of dollars. The acquisition underscores Silverfort’s strategy of augmenting its platform with niche AI capabilities to stay ahead of evolving identity threats.
Employee Integration
Following the closing of the deal, Fabrix’s entire team of 14 employees will transition to Silverfort. This includes the company’s co‑founders, engineering leads, and product specialists. Their integration will expand Silverfort’s global headcount—currently about 600 staff, roughly half based in Israel—by adding deep expertise in AI‑driven identity security.
Founders’ Backgrounds
Fabrix was launched in 2025 by CEO Raz Rotenberg, who previously served as a founding engineer at Run:ai before its acquisition by Nvidia, and CTO Ofir Yakovian, a former tech lead at Orca Security and Microsoft Entra who holds an M.Sc. in quantum computing. Their combined experience spans high‑performance computing, cloud security, and enterprise identity solutions, providing a strong technical foundation for the startup’s AI‑native approach.
Technical Leadership and Funding
The VP of R&D at Fabrix, Roee Oz, brings a distinguished pedigree as the former chief architect for Microsoft Defender for Cloud and the leader of Microsoft’s AI security incubation efforts. Fabrix secured $8 million in seed capital from a consortium of top‑tier venture firms—Norwest, toDay Ventures, and Jibe Ventures—as well as strategic angels from Google, Palo Alto Networks, Cyera, Microsoft, Tenable, and Nvidia. This backing reflects confidence in Fabrix’s vision to reinvent identity security through AI.
Joint Vision for Real‑Time Access Control
Silverfort and Fabrix plan to merge their technologies to create an identity protection and access‑control engine that makes access decisions in real time. The engine will evaluate the contextual risk associated with each identity—whether human, non‑human (such as service accounts or bots), or AI agent—before granting or denying access to organizational systems. By moving from static, admin‑time policies to dynamic, runtime enforcement, the combined platform aims to eliminate the lag that currently exposes enterprises to credential abuse and lateral movement.
Silverfort’s Acquisition Track Record
The Fabrix deal marks Silverfort’s second acquisition in less than a year. To date, the company has raised over $222 million, highlighted by a $116 million Series D round in 2024. Its prior purchase, Rezonate—an Israeli firm focused on cloud identity security—was completed in November 2024. These moves illustrate Silverfort’s aggressive buy‑and‑build strategy to broaden its product suite and deepen its market presence.
Lesson from the Rezonate Acquisition
The integration of Rezonate gave Silverfort enhanced capabilities to secure identities across multi‑cloud environments, addressing a growing demand for unified cloud‑identity protection. Building on that foundation, the Fabrix acquisition pushes the company further toward solving the next frontier: managing access for the proliferation of non‑human and AI‑driven identities that traditional rule‑based systems struggle to monitor effectively.
The Limitations of Admin‑Time Rules
In today’s AI‑centric landscape, reliance on pre‑defined access rules established at “admin time” is increasingly inadequate. The sheer volume and velocity of identity changes—driven by DevOps automation, machine‑learning workloads, and autonomous agents—render static policies obsolete almost as soon as they are written. Organizations consequently find themselves reacting to breaches rather than preventing them, losing control over critical assets.
Statement from Silverfort’s CEO
Hed Kovetz, CEO and Co‑Founder of Silverfort, commented on the strategic rationale: “Today, Identity Security and access control rely on rules that are created at ‘admin time’, attempting to pre‑define access. But in the AI era, it’s becoming impossible to keep up, and organizations are rapidly losing control. The only way to mitigate this risk without stopping the business is to make access decisions at runtime, using AI and deep context. Together with Fabrix, Silverfort’s platform will empower enterprises to protect their human, non‑human, and agentic identities and their access, dynamically and continuously, using a runtime AI decisioning engine.”
Statement from Fabrix’s CEO
Raz Rotenberg, CEO and Co‑Founder of Fabrix, expressed enthusiasm about the union: “We founded Fabrix with a clear vision: making Identity Security easier, faster, and more scalable using an AI‑native approach. By joining Silverfort, we can bring this transformation to the largest companies in the world and combine our AI engine with Silverfort’s runtime enforcement to create something no one has achieved before. We are excited to become part of the team shaping the future of identity security.”
Market Implications and Future Outlook
The combined entity is poised to set a new benchmark for identity security in an era where AI agents, workloads, and automated scripts outnumber human users. By delivering a runtime AI decisioning engine that continuously evaluates trust and context, Silverfort aims to replace brittle rule‑based policies with adaptive, policy‑as‑code mechanisms. This shift could reduce the attack surface associated with over‑privileged service accounts, curb lateral movement, and help organizations meet stringent compliance requirements in regulated industries. As AI adoption accelerates, the demand for such dynamic, context‑aware controls is expected to grow, positioning the rebuilt Silverfort‑Fabrix platform at the forefront of the next wave of cybersecurity innovation.