APEX

Apex (apexhq.ai) is an agentless AI security platform designed to protect enterprises using generative AI tools such as ChatGPT Enterprise and Microsoft 365 Copilot. It provides visibility, threat detection, and automated remediation of AI-related risks including prompt injection, jailbreaks, sensitive data exposure, and Shadow AI usage. The platform enables organizations to enforce security, privacy, and compliance policies across all AI interactions without disrupting employee workflows. Apex was founded in 2023, backed by Sequoia Capital, Index Ventures, and Sam Altman, and was acquired by Tenable in 2025.