Silverfort

The idea: identity is the weak link

Silverfort was founded in 2016 by three Israeli entrepreneurs: Hed Kovetz, Yaron Kassner and Matan Fattal. The idea behind the company, as Kovetz, the CEO, puts it: corporate information security grew as a collection of separate tools, each covering a different corner (MFA for employees, privilege management for system administrators, monitoring for service accounts), and between these tools there remain gaps and blind spots, which is exactly where attackers like to work. The solution the three proposed is a single layer of protection that sees all the identities in the organization as a whole, regardless of where they operate (in the cloud or on premises) or who or what is behind them (a human employee, an automated service, an AI agent). Semperis also works in identity security. Its main research and development center is in Israel, and its products protect Active Directory and other identity systems and help with recovery after an attack.

No agent on every server: how it works in practice

Silverfort's main product, the Authentication Firewall, together with a Universal MFA layer, applies authentication policy and access control without having to install a separate agent on every resource you want to protect. This matters especially for older (legacy) systems, command-line interfaces and service accounts: resources that traditional MFA tools simply skipped, because they did not support installing an agent or because new software could not be installed on them at all. Closing this gap is the main difference between Silverfort's approach and older MFA solutions on the market.

The funding path: from $11.5 million to unicorn

The company raised money gradually over six years: $11.5 million in a Series A in June 2018 led by TLV Partners, $30 million in a Series B in August 2020, $65 million in a Series C in April 2022 led by Greenfield Partners, and $116 million in a Series D in January 2024 led by Brighton Park Capital, with participation from investors such as Citi Ventures and General Motors Ventures. The last round valued the company at exactly $1 billion, unicorn status, bringing total funding to $222 million. According to the company's announcement at the time, its revenue was growing at an annual rate of more than 100%, and it operated in more than 15 countries.

Expanding to non-human identities: Rezonate and Fabrix

In November 2024 Silverfort acquired Rezonate, an Israeli security company that specialized in detecting identity threats, in a deal worth about $30 million. About a year and a half later, in April 2026, it acquired Fabrix Security to add runtime protection for the identities of autonomous AI agents working inside the organization's network: not only human accounts and traditional service accounts, but also AI software that makes decisions and takes actions on its own. Both acquisitions reflect a declared business bet: that "identity" as a security field will keep expanding and will include more and more non-human actors.

2026 partnerships: SentinelOne and Microsoft

In April 2026 Silverfort announced a strategic partnership with SentinelOne, the Israeli-American endpoint security company, to combine threat detection capabilities between the two platforms. In June 2026 it announced an integration with Microsoft Copilot Studio, which makes it possible to apply identity controls to AI agents that organizations build inside Microsoft's Copilot environment. This step illustrates a broader direction in the cybersecurity industry: as organizations deploy more autonomous AI agents, existing identity security tools are expanding to treat them as a full "identity" that needs to be identified, authenticated and monitored.