Build.Security
Last updated: Apr 28, 2026
Build.Security was an Israeli developer-focused authorization platform startup providing fine-grained access control and policy-based governance for modern applications and APIs. It was acquired by Elastic in 2024.
Company Overview
Build.Security developed a developer-centric platform for implementing role-based access control (RBAC) and attribute-based access control (ABAC) in modern distributed applications. The platform was built on Open Policy Agent (OPA), enabling engineering teams to define, enforce, and audit fine-grained authorization policies across application portfolios without modifying core application logic. This policy-as-code approach decoupled authorization logic from business logic, a critical architectural pattern for microservices and cloud-native systems.
The company targeted fast-moving software organizations struggling with authorization complexity—a persistent gap in application security infrastructure. As applications shifted from monolithic architectures to distributed APIs and microservices, traditional role-based access control mechanisms proved insufficient. Build.Security addressed this by providing an API-driven, vendor-neutral authorization platform that could enforce consistent access policies across heterogeneous application environments. The platform emphasized rapid deployment and minimal integration friction, with particular appeal to development teams seeking to meet compliance and security standards without architecture redesign.
Build.Security competed in the growing authorization infrastructure and Identity & Access Management (IAM) modernization space, alongside similar developer-focused authorization platforms such as Aserto, AuthZed, Permit.io, and Oso. The competitive dynamic reflected both commercial demand for better authorization tooling and open-source alternatives (OPA itself is open-source). Build.Security's commercial differentiation centered on developer experience, policy language expressiveness, and seamless integration with CI/CD and API deployment workflows.
The company achieved private venture financing and built a small, focused engineering team headquartered in Sunnyvale, California (though with Israeli founding roots). In 2024, Elastic acquired Build.Security to strengthen its security and policy enforcement capabilities within the Elastic Stack, integrating fine-grained authorization and access governance into Elastic's broader observability and security platform. This acquisition reflects both the strategic importance of authorization infrastructure to enterprise security and Elastic's recognition that policy-driven access control is essential for cloud-native and Kubernetes-centric security architectures.
The dual-use relevance is substantial: fine-grained authorization and policy enforcement are foundational to both commercial cloud security and defense-adjacent mission systems. In commercial contexts, authorization infrastructure directly mitigates access misuse, privilege escalation, and data exfiltration. In defense and government systems, robust authorization controls are critical to maintaining mission integrity, enforcing least-privilege access, and auditing sensitive operations. The technology is inherently dual-use because access control is universally required across civilian and defense applications.
Dual-Use Assessment
Authorization policy infrastructure has strong dual-use applicability: commercial enterprises require fine-grained access control to mitigate privilege escalation, lateral movement, and insider threats; defense and government systems require the same capabilities to enforce least-privilege access to classified systems and mission-critical infrastructure. OPA-based policy enforcement is particularly relevant to security-conscious government IT modernization, where policy-driven controls are essential to zero-trust architecture implementation. The technology enables both civilian and defense security posture hardening.
Strategic Fit Assessment
Build.Security is no longer presented as an independent direct-diligence target as an independent startup: the company was acquired by Elastic in 2024. As an acquired and integrated subsidiary, it no longer represents an independent strategic-screening signal. For strategic investors with specific authorization infrastructure interests, engagement would be through Elastic, not Build.Security directly.
Strategic Value to U.S.-Israel Alliance
Build.Security represented a strategically important acquisition for Elastic because fine-grained policy-driven authorization is essential to zero-trust security architecture and cloud-native security posture. The integration of OPA-based authorization into Elastic Stack strengthens Elastic's platform for enterprises and government systems requiring robust access control governance. For defense and national-security customers, the acquisition increases Elastic's capability to support policy-based access control in sensitive environments.
Key Technologies
- Open Policy Agent (OPA) policy engine
- Policy-as-code definition and enforcement
- Fine-grained RBAC and ABAC
- API-driven authorization decision-making
- Distributed policy evaluation and caching
- CI/CD and deployment pipeline integration
Use Cases & Applications
- Zero-trust access control in cloud-native and Kubernetes environments
- API authorization and gateway policy enforcement
- Preventing unauthorized access to sensitive systems and data
- Implementing least-privilege controls across microservices
- Audit and compliance in multi-tenant SaaS platforms
- Defense and government system access control
- Mission-critical infrastructure authorization governance
- Identity and privilege escalation risk mitigation
Sources and verification
This profile is based on public-source research, Claw & Talon curation, and editorial judgment. Inclusion does not imply endorsement, partnership, investment, or a recommendation to transact. Open-web verification is limited. Readers should confirm current status, customers, funding, and product claims before relying on this profile.
Verification note: public information is limited; this entry is retained for ecosystem-mapping purposes and should not be relied on without further confirmation.
Public sources
The links below are visible public references used for source discipline around company identity, status, funding, customer, acquisition, public-company, or other material claims where available.
- Startup Nation Finder profile Verified public ecosystem profile used for company identity and source provenance.
- Profile update timestamp Last updated in the Claw & Talon database on Apr 28, 2026.
Investor Lens
What this entry is
Acquired asset
Why it may matter
Build.Security may matter as a Cybersecurity entry with not currently an investable standalone company for Israeli technology research.
How an independent investor should read this
Not currently an investable standalone company. Read this profile as a starting point for independent verification, not as a recommendation or suitability assessment.
Evidence to verify
- Verify current status
- Verify technical claims
- Verify regulatory/export-control issues
Main investor questions
- Is this entry a benchmark, buyer, ecosystem node, acquired asset, or strategic reference rather than a live startup opportunity?
- What does this reference clarify about buyers, sector structure, public-market context, or strategic demand?
- Does the dual-use claim map to actual commercial and government/defense/resilience buyer evidence?
- What evidence would change the thesis or show that the profile is stale?
What not to infer
- Inclusion does not imply endorsement.
- Inclusion does not imply allocation availability or current fundraising.
- Scores do not indicate investment suitability or expected returns.
- Strategic importance does not automatically imply venture return potential.
Diligence questions
- What evidence verifies Build.Security's current customer traction, deployment status, and revenue concentration?
- Which technical claims are independently demonstrable today, and which remain roadmap or pilot-stage assertions?
- Where does the product create real defense, intelligence, critical-infrastructure, or emergency-response value beyond ordinary commercial adoption?
- How does the platform integrate into existing SOC, cloud, identity, or compliance workflows without adding operational burden?
- Is the company a live venture opportunity, a mature strategic reference, an acquired asset, or primarily a market-mapping entry?
Related sector
See the Cybersecurity sector page for market context, related subcategories, and other Israeli companies in this part of the database.
Related companies
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