Apex – Specialized AI Security And Governance
Apex (apexhq.ai) developed a specialized AI security and governance platform that gives enterprises real-time visibility into generative AI and LLM activity, policy enforcement, and risk remediation capabilities. Founded in 2023 in Tel Aviv, the company was acquired by Tenable in 2025.
- Founded: 2023
- HQ: Tel Aviv, Israel
- Status: Acquired by Tenable (announced May 2025; integration into Tenable One platform)
- Core Focus: Visibility, governance, and security controls for enterprise GenAI and LLM adoption
Core Data Grid
| Funding Round | Lead Investors / Notable Backers | Total Raised (approx.) | HQ Location | Industry Sector | Estimated Team Size | Key Partners / Validation (if material) |
|---|---|---|---|---|---|---|
| Seed (May 2024); Acquired by Tenable (2025) | Sequoia Capital, Index Ventures; Angels: Sam Altman (OpenAI), Clem Delangue (Hugging Face) | ~$7M (pre-acquisition) | Tel Aviv, Israel | AI Security / Cybersecurity | 11–50 (pre-acquisition) | Tenable (acquirer); integration into exposure management platform; strong AI-native VC and operator validation |
Apex Leadership & Structural Breakdown
- Key Leadership: Matan Derman, Co-Founder and CEO (Unit 8200 cybersecurity leadership background; Stanford GSB). Tomer Avni, Co-Founder and CPO (Unit 8200; Harvard background); post-acquisition VP Product role at Tenable. LinkedIn profiles available via company and founder searches.
- Primary Competitors: Protect AI, Enkrypt AI, CalypsoAI (focused AI security and governance platforms addressing model protection, prompt risks, and enterprise GenAI controls).
- Core Use Cases & Market Problem: Security and AI teams at large enterprises need to discover shadow AI usage, unsanctioned tools, AI-generated code/identities, and policy violations that create data leakage, IP, compliance, and operational risks. The platform enables governance and response without requiring organizations to slow AI adoption by developers or employees.
Plain English Explanation: The platform monitors AI tool and model interactions across an organization, surfaces ungoverned or risky activity in real time, and gives security teams controls to define and enforce acceptable use policies at scale.
Target Customers & Adoption Context: Large enterprises with active GenAI and LLM deployments, particularly CISOs, security operations, and AI/ML teams in regulated or high-stakes sectors. It addresses the gap between rapid employee and developer adoption of public and internal AI tools and the lack of centralized visibility or enforceable guardrails.
Capital & Traction Signals: Closed a $7M seed round in May 2024 co-led by Sequoia Capital and Index Ventures with high-profile AI angels. Roughly one year later, Tenable announced its intent to acquire the company, with public reporting indicating a transaction value exceeding $105 million. The acquisition expands Tenable’s AI Aware capabilities with deeper governance, policy enforcement, and control over both consumed and internally built AI, with integrated features expected in the second half of 2025 as part of the Tenable One exposure management platform.
Editorial Assessment (Investor Lens): Apex addressed a clear infrastructure gap that emerged as enterprises moved GenAI from pilots to production use in 2024–2025: the proliferation of ungoverned AI activity created new exposure vectors outside traditional security perimeters. Its combination of real-time visibility and enforceable policy controls for both used and built AI attracted premier backers with direct exposure to AI deployment risks. The rapid acquisition by Tenable at a significant multiple on seed capital provided concrete validation of product-market fit and the strategic value of specialized AI attack surface management within broader exposure platforms. Allocator-relevant signals include the founders’ elite Unit 8200 cyber pedigrees, precise category timing, and integration path into an established public cybersecurity company. Watchpoints center on post-acquisition integration execution and competitive responses from larger platforms embedding native AI governance. Public milestones support defensibility through specialized detection and governance methods that delivered measurable exit outcomes for early investors.
Last Updated: June 2026
Sources:
- Index Ventures company profile and funding announcement perspective
- Sequoia Capital company profile
- Tenable official press release (May 29, 2025) on intent to acquire
- Crunchbase organization profile
- Tracxn company and funding data
- Industry reporting on acquisition (Calcalist, Dark Reading)