Apex (Apex Security)

aid: apex
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source: []
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/apex.png
name: Apex (Apex Security)
description: 'Apex Security was an AI security startup founded in 2023 in Tel Aviv by Matan Derman (CEO) and Tomer Avni (CPO),
  backed by Sequoia Capital, Index Ventures and angel investors including Sam Altman. Its platform gave enterprises visibility
  into generative-AI and LLM usage — public tools like ChatGPT and Gemini, Microsoft Copilot, and in-house AI applications
  — then let them define policy, detect violations and shadow AI, and respond to attacks across the AI attack surface. Tenable
  announced its intent to acquire Apex on 2025-05-29 and closed the acquisition in June 2025 for approximately $47.8M; the
  technology was folded into the Tenable One exposure management platform and now ships as Tenable One AI Exposure. Apex no
  longer operates as an independent company: the apexhq.ai domain has lapsed and was re-registered by an unrelated party on
  2026-05-13, and now serves a Namecheap parking page. There is no Apex developer portal, documentation, or public API surface
  to catalog.'
url: https://raw.githubusercontent.com/api-evangelist/apex/refs/heads/main/apis.yml
x-type: company
x-source: index-ventures-portfolio
x-tier: stub
x-tier-reason: acquired-no-api-surface
x-status: acquired
x-acquired-by: Tenable Holdings, Inc.
x-acquired-announced: '2025-05-29'
x-acquired-closed: 2025-06
x-successor-product: Tenable One AI Exposure
x-successor-url: https://www.tenable.com/products/ai-exposure
x-defunct-domain: apexhq.ai
x-defunct-domain-note: Lapsed after the Tenable acquisition; re-registered 2026-05-13 by an unrelated party and now serving
  a Namecheap parking page (HTTP 200, no company content). The apex root domain does not resolve to a live host; www.apexhq.ai
  returns the parking page and all subpaths 404.
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-19'
tags:
- Company
- Security
- Artificial Intelligence
- AI Security
- LLM Security
- Exposure Management
- Acquired
- Israel
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Acquisition
  url: https://www.tenable.com/press-releases/tenable-announces-intent-to-acquire-apex-security-to-expand-exposure-management-across-the-ai-attack-surface
- type: SuccessorProduct
  url: https://www.tenable.com/products/ai-exposure
- type: InvestorProfile
  url: https://www.indexventures.com/companies/apex/
x-enrichment:
  date: '2026-07-19'
  status: nochange
  artifacts_added: 0
  pass: local-v1
  notes: 'Second pass re-verified the first and found nothing new. Company is defunct/acquired: Tenable announced intent 2025-05-29
    and closed June 2025; technology now ships as Tenable One AI Exposure. Re-probed 2026-07-19: apexhq.ai A=162.255.119.26
    only, and docs./developer./api.apexhq.ai have NO DNS records at all, so no API host exists. www.apexhq.ai serves a Namecheap
    parking page confirming the domain was re-registered by an unrelated party on 2026-05-13. Because the domain is no longer
    controlled by Apex, any content harvested from it would be MISATTRIBUTED to this company — a second, independent reason
    to write zero artifacts here beyond the absent API surface. No developer portal, docs, OpenAPI, packages, well-known,
    or event surface exists to enrich. Any successor API surface belongs in all/tenable/, not this repo. No artifacts written
    by design — writing any would be fabrication.'