How much funding has Act Security raised?

Act Security has raised $60.0M in total funding, most recently a Series A round.

Who are Act Security's investors?

Act Security's investors include Team8, Notable Capital, Bessemer VP.

When was Act Security founded?

Act Security was founded in 2025.

Where is Act Security headquartered?

Act Security is headquartered in Tel Aviv, Israel.

What industry is Act Security in?

Act Security operates in Cybersecurity.

How many employees does Act Security have?

Act Security has 11-50 employees.

Act Security

Cloud infrastructure and data center security

Tel Aviv, Israel · Founded 2025 · $60.0M raised

Cybersecurity

Headquarters: Tel Aviv
Employees: 11–50
Founded: 2025
Business Model: B2B

Total Funding: $60.0M
Last Round: $40.0M Series ADec 2025
Rounds: 2

About

Act Security is an Israeli cybersecurity startup founded by the team behind Medigate, the medical device security company acquired by Claroty for approximately million in 2021. Act Security was co-founded by Jonathan Langer (CEO), Itay Kirshenbaum (CTO), Stephen Goldberg (Chief Product Officer), and Ilai Fallach (Chief R&D Officer), who collectively built and exited Medigate. The company develops a platform for securing cloud infrastructure and data centers, addressing the growing challenge of protecting modern hybrid environments. Act Security raised a million seed round in 2025 led by Bessemer Venture Partners, Team8, Hetz Ventures, and Brightmind, followed just four months later by a million Series A led by Notable Capital with participation from Startpoint Capital and Claltech, bringing total funding to million. The company employed approximately 30 people as of late 2025 and is headquartered in Tel Aviv, Israel.

Summary

Act Security is a Cybersecurity company based in Tel Aviv, Israel, founded in 2025. It has raised $60.0M in total across 2 rounds, most recently a $40.0M Series A round in Dec 2025. Investors include Team8, Notable Capital and Bessemer VP.