Prompt Security

Company Overview

Snapshot

Founded in August 2023 by Itamar Golan, Lior Drihem, and Vitaly Neyman, Prompt Security operates with 51–200 employees. The company has secured funding across 3 rounds from 7 investors, with a notable acquisition by SentinelOne in August 2025.

Business overview

Prompt Security delivers a comprehensive platform for securing enterprise AI, focusing on preventing Shadow AI and data exposure risks from third-party tools and copilots. Its core technology protects homegrown AI applications from threats such as prompt injections, jailbreaks, and toxic outputs. The company serves enterprises by providing full visibility, policy enforcement, and governance across all AI interactions through inspecting every prompt and response, operating within the Cyber Security sector.

Strategic signal

The acquisition of Prompt Security by SentinelOne in August 2025, as reported by CTech, signifies a strategic move by SentinelOne to expand its GenAI security capabilities. This event highlights the increasing demand for specialized AI security solutions within the cybersecurity market and validates Prompt Security's technology as a critical component for safeguarding enterprise AI interactions. For investors, this signals a strong market appetite for innovative AI security platforms and potential for further consolidation in the sector.

Company Intelligence Q&A

What was a significant recent corporate development for Prompt Security?

Prompt Security was acquired by SentinelOne in August 2025. This acquisition was announced by SentinelOne and reported by CTech, indicating SentinelOne's expansion into GenAI security.

What was Prompt Security's last disclosed funding round?

This round saw participation from investors including Jump Capital and F5 Networks.

When did Prompt Security launch its GenAI security solution for MSSPs?

Prompt Security launched its first GenAI security solution for Managed Security Service Providers (MSSPs) and unveiled new MSSP partnerships in July 2024.

What was Prompt Security's seed funding round?

This round was led by Hetz Ventures, with participation from Four Rivers Group.

What is the strategic importance of Prompt Security to SentinelOne?

In August 2026, SentinelOne's earnings report highlighted Prompt Security as one of the fastest-growing parts of its AI security business, underscoring its strategic importance in enhancing SentinelOne's GenAI capabilities and contributing to its revenue outlook.