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§ Private Profile · Tel Aviv, Tel Aviv, Israel
A cybersecurity platform protecting cloud infrastructure and data centers, mitigating risks and vulnerabilities.
Act Security is a Tel Aviv, Israel-based cybersecurity company that develops a specialized software platform focused on protecting cloud infrastructure and complex data centers. The enterprise technology provider delivers comprehensive security solutions designed to help organizations secure their digital environments, manage system vulnerabilities, and mitigate critical information technology infrastructure risks across various enterprise networks. Operating primarily within the business-to-business software sector, the venture-backed firm equips corporate IT departments and data center operators with advanced cyber defense and infrastructure protection capabilities. To support the ongoing development and commercialization of its proprietary security platform, the organization has successfully raised $20 million in total funding from global venture capital investors. Act Security was officially established in 2025 by the founding team of chief executive officer Jonathan Langer, chief product officer Stephan Goldberg, Ilai Fallach, and Itay Kirshenbaum.
Act Security has raised $40.0M across 1 funding round.
Act Security has raised $40.0M in total across 1 funding round.
Act Security has raised $40.0M across 1 funding round. Most recently, it raised $40.0M Series A in December 2025.
| Date | Round | Lead Investors | Other Investors | Status |
|---|---|---|---|---|
| Dec 29, 2025 | $40M Series A | Notable Capital | Sharin Fisher, Access Venture Partners, Bessemer Venture Partners, Brightmind Partners, Claltech, Hetz Ventures, Team8 | Announced |
Act Security has raised $40.0M in total across 1 funding round.
Act Security's investors include Notable Capital, Sharin Fisher, Access Venture Partners, Bessemer Venture Partners, Brightmind Partners, Claltech, Hetz Ventures, Team8.