Rein Security

Company Overview

Snapshot

Founded in June 2024 by Netanel Rubin, Rein Security operates with 1–10 employees. The company has raised $8 million across one funding round from three investors, including lead investor Glilot Capital Partners.

Business overview

Rein Security provides an agentless application security platform designed to offer CISOs and AppSec teams real-time visibility into how applications function in production. The platform correlates requests, responses, resources, APIs, and code to identify validated risks rather than theoretical findings. It addresses critical areas such as API security, SCA reachability, detection and response, and AI/MCP protection. Co-headquartered in Tel Aviv and New York, Rein Security serves enterprises like Lemonade and HiBob, operating within the Cyber Security sector, specifically focusing on Application & Website Security.

Strategic signal

In February 2026, Rein Security released "The Great AppSec Reality Check" report, highlighting that 76% of security professionals lack the production insight needed to secure modern applications. This report underscores a critical market gap that Rein Security's agentless application security platform aims to fill, signaling strong product-market fit and a strategic focus on educating the market about the importance of real-time production visibility for robust application security.

Company Intelligence Q&A

When was Rein Security founded?

Rein Security was founded in June 2024.

Who are the founders of Rein Security?

Rein Security was co-founded by Netanel Rubin.

What is Rein Security's primary focus?

Rein Security focuses on providing an agentless application security platform that offers real-time visibility into how applications run in production, correlating various data points to surface validated risks.

What was a significant recent development for Rein Security?

In February 2026, Rein Security released "The Great AppSec Reality Check" report, which revealed that a significant majority of security professionals lack the necessary production insight to secure modern applications effectively.

Which investors participated in Rein Security's funding round?

In January 2026, Rein Security received funding from investors including.