Last updated 2026-07-20
Total raised
—
Last: Undisclosed Round 2025-12
Stage
Series A
Founded
2025
Headcount
30
HQ
Ramat Gan, Israel
Sector
Cyber Security
About
Act Security is building a security platform purpose-built for cloud infrastructure and data centers, aiming to move beyond reactive security measures to prepare organizations for the evolving landscape of cloud security. The platform treats cloud infrastructure and data centers as a single, coherent security problem.
Headcount over time
30 employees (2026-09) · 1 point
Offices
Ramat Gan, Israel · HQ / main office
Q&A
- What is Act Security's primary focus?
- Act Security is developing a platform for securing cloud infrastructure and data centers, with a one-liner describing their focus as "Actionable Cloud Risk-reduction for Security Teams."
- When was Act Security founded?
- Act Security was founded in August 2025.
- How much funding has Act Security raised to date?
- Act Security has raised a total of $60,000,000 USD.
- Who were the investors in Act Security's August 2025 funding round?
- In August 2025, Act Security received funding from Bessemer Venture Partners, Team8, and Hetz Ventures.
- Which investors participated in Act Security's December 2025 funding round?
- In December 2025, Act Security secured funding with.
- What is Act Security's current funding stage?
- Act Security is currently in its Series A funding stage.
- How many employees does Act Security have?
- Act Security has 11-50 employees.
- Who are the co-founders of Act Security?
- The co-founders of Act Security are Jonathan Langer (Co-founder & CEO), Stephan Goldberg (Co-founder & CPO), Itay Kirshenbaum (Co-founder & CTO), and Ilai Fallach (Co-founder & VP R&D).
Team · 8
Jonathan Langer
Founder · Co-Founder and CEO
Stephan Goldberg
Founder · Co-Founder and CPO
Ilai Fallach
Founder · Co-Founder and VP R&D
Itay Kirshenbaum
Founder · Co-Founder and CTO
Paul Goldweitz
VP Sales
Lea Edelstein Olkinizki
VP Product
Offir Levy
VP Sales Engineering & GTM Strategy
Tal Vasser
CFO & COO
Sectors & technology
Primary sector
Cyber Security
Sub-sectors
Cyber SecurityCloud Security
Target customers
Enterprise & Professional ServicesITData CentersEnterprises
Business model
B2B
Highlights
Verified
Full data — links, identifiers, deals & radar signals (jobs, patents, research, more)
External links
| Website | act.security/ |
|---|---|
| linkedin.com/company/109978839/ |
Identifiers & details
| Legal name | ACT SECURITY LTD |
|---|---|
| Founded | 2025-7 |
| Employees (exact) | 30 |
Radar intelligence
Open jobs — personio
| Total open | 3 |
|---|---|
| Remote | 0 |
| By location | Remote (1), München (2) |
| Title | Location | Department |
|---|---|---|
| Initiativbewerbung (Festanstellung) | Remote | |
| Social Media (Werkstudent) | München | |
| SEO Marketing Manager | München |
Patents
| EPO | 5 |
|---|
Web history (Wayback)
| Domain | act.security |
|---|
Certificate / subdomain footprint
| Subdomains | 48 |
|---|
Israeli Companies Registrar (רשם החברות / ICA)
| Registrar # (ח.פ.) | 517198537 |
|---|---|
| Status | פעילה |
| Corp type | ישראלית חברה פרטית |
| Incorporated | 2025-07-30 |
| Purpose | לעסוק בכל עיסוק חוקי |
| Liability | מוגבלת |
| In violation (unfiled) | no |
| Active charges / liens | 0 |
| Registry events | 0 |
| Registered address | כנפי נשרים 16 רמת גן |