COMPANY PROFILE

ACT

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Actionable risk reduction and protection for cloud environments

Tel Aviv-Yafo, IsraelFounded 2025Security

Valuation $100–250M Last recorded · 2025

Headcount <100 Current team size

Total funding $50–100M Disclosed equity funding

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About ACT

ACT Security is a stealth-mode cybersecurity startup headquartered in Tel Aviv, Israel, established in 2025. The company was founded by the entrepreneurial team behind Medigate, which was acquired by Claroty in 2021 for approximately $400 million. The founders include Jonathan Langer, who serves as the lead, Itay Kirshenbaum as Chief Technology Officer, Stephen Goldberg as Chief Product Officer, and Ilai Fallach. Their previous venture, Medigate, developed a specialized cybersecurity platform for medical devices and the Internet of Medical Things (IoMT).

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The new venture, currently known as ACT, secured $20 million in a seed funding round from notable investors including Team8 and the U.S. venture capital firm Bessemer Venture Partners. The company is operating in the cloud security market, aiming to provide a more advanced layer of protection that moves beyond traditional visibility and vulnerability disclosure. The core of its business model is to develop a platform that enables security teams to take concrete and effective actions to mitigate and reduce risks within their cloud infrastructures.

Source: Dealroom company data

At a glance

Status: Operational
Founded: 2025
Headquarters: Tel Aviv-Yafo, Israel
Employees: 46
Open positions: None listed
Dealroom signal: 85.2/100
Industry: Security
Sub-industry: Public safety, Cloud & Infrastructure
Sector: Security
Business model: SaaS
Client focus: b2b
Links: Website LinkedIn

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Funding history

2 recorded events

Company financing events and reported valuations.

Deal type	Date	Amount	Valuation	Investors	Source
SERIES AOther financing	Dec 2025	$40M	$160M	Team8 · Startpoint Capital · Bessemer Venture Partners · Hetz Ventures	↗
SEEDOther financing	Aug 2025	$20M	$80M	Bessemer Venture Partners · Team8	↗

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Growth signals

ACT website traffic

Latest recorded traffic for ACT is 17K monthly website visits, down 41.4% over the last three months.

Latest monthly visits17K 3-month web change-41.4%

Monthly website visitsNov 2025–Jul 2026

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