Act Security: Securing the Access Layer of the AI Era
An action-centric cloud security platform that reduces excessive access, removes hidden attack paths and helps enterprises safely deploy AI agents by enforcing precise boundaries around identities, workloads and data.
Visit act.security ↗Basic Information
| Field | Detail |
|---|---|
Company Name |
Act Security |
Category |
Cybersecurity |
Subcategory |
AI Agent Security, Cloud Access & Identity Security |
Founded |
2025 |
Headquarters |
Tel Aviv, Israel |
Stage |
Series A |
Total Funding |
$60 million |
Latest Funding |
$40 million · Series A · 2025 |
Founders |
Jonathan Langer, Stephan Goldberg, Itay Kirshenbaum & Ilai Fallach |
CEO |
Jonathan Langer |
Key Investors |
Notable Capital, Team8, Bessemer Venture Partners, Startpoint Capital, Hetz Ventures & SVCI |
Website |
act.security ↗ |
What Act Security Does
Act Security focuses on the access layer of cloud environments. It maps identity, network and AI access together, identifies unnecessary reachability and helps security teams remove the access paths that can turn vulnerabilities into breaches.
Key Capabilities
- Map identity, network and AI access across cloud environments
- Identify configured, observed and intended access
- Remove excessive permissions and hidden attack paths
- Contain AI agents and workloads within defined boundaries
- Simulate and enforce security changes through existing cloud-native controls
Why It Matters
AI agents introduce another class of non-human workloads that can interact with data, applications and infrastructure. Act approaches the problem from the access layer, limiting what agents and other workloads can reach instead of relying only on detection after a risky action occurs.
Act Security at Scale
$60M
Funding in First Year
Act raised $20 million in seed funding followed by a $40 million Series A, reaching $60 million in total funding shortly after its founding.
30+
Team Members
Act was reported to have approximately 30 employees shortly after its Series A, reflecting rapid early expansion.
6
Security Boundaries
The platform organizes its cloud security model around six contextual boundaries covering external access, human identity, environment, application, AI and data.
Enterprise Momentum
AI Agent Security
Act allows organizations to contain AI agents and AI workloads so they can access only the resources required for their intended tasks.
Cloud Access Reduction
The platform combines identity, network and AI access into a single model and uses hardening campaigns to reduce unnecessary access across cloud environments.
Enterprise Security Teams
Act is positioned for CISOs and cloud security teams that need to move from discovering large volumes of findings toward continuously enforcing least-privilege boundaries.
AI and Cloud Security Platform
Access Mapping
Act analyzes configured, observed and intended access to expose the difference between what systems are technically allowed to reach and what they actually need.
Hardening Campaigns
Security teams can use guided campaigns to close unused access paths, apply broad guardrails and ring-fence critical applications and sensitive data.
Safe Enforcement
Recommended changes can be simulated against historical access data before enforcement, with changes delivered through existing infrastructure-as-code and cloud-native controls.
Funding Journey
2025
Company Founded
Act
Founded by the team behind Medigate
2025
Seed
$20M
Led by Team8 and Bessemer Venture Partners
2025
Series A
$40M
Led by Notable Capital
July 2026
Public Launch
$60M
Emerged from stealth with $60M total funding