Apex Security

Company Overview

Snapshot

Founded in April 2023 by Matan Derman and Tomer Avni, Apex Security grew to 11–50 employees. The company raised $7 million across one funding round from 4 investors, with Sequoia Capital as a lead investor. In May 2025, Apex Security was acquired by Tenable.

Business overview

Apex Security developed a security platform that provides organizations with comprehensive visibility into their AI activities. The platform enables companies to define and enforce security policies for AI usage, detect violations of security standards, and respond to AI attacks. It adds a crucial security layer to AI models, applications, and large language models (LLMs), including a secure portal for interacting with organizational AI platforms. Apex Security operates within the Cyber Security sector, specifically focusing on Application & Website Security, and leverages Artificial Intelligence, particularly Generative AI, to serve enterprise clients.

Strategic signal

In May 2025, Apex Security was acquired by Tenable for over $105 million. This acquisition highlights the increasing strategic importance of AI security within the broader cybersecurity landscape and signals strong market validation for Apex Security's specialized platform, which enhances Tenable's exposure management capabilities with AI security integration.

Company Intelligence Q&A

When was Apex Security acquired and by whom?

Apex Security was acquired by Tenable in May 2025.

What was the reported acquisition amount for Apex Security?

Tenable acquired Apex Security for over $105 million in May 2025. This acquisition highlights the increasing strategic importance of AI security within the broader cybersecurity landscape.

Which investors participated in Apex Security's seed funding round?

In May 2024, Apex Security raised $7 million in seed funding from investors including.

What was the initial funding amount raised by Apex Security?

Apex Security emerged from stealth in May 2024, announcing $7 million in seed funding.

What was the reported valuation of Tenable at the time of the acquisition?

At the time of the acquisition in May 2025, Tenable was publicly traded with a reported valuation of approximately $4 billion.