Rein Security

Agentless Application Security Platform

Cyber Security
Active
Seed Tel Aviv-Yafo, Israel Founded 2024
Last updated 2026-06-18
Total raised
$8.0M
Last: 2026-01
Stage
Seed
Founded
2024
Headcount
4
HQ
Tel Aviv-Yafo, Israel
Sector
Cyber Security

About

Rein Security provides an agentless application security platform that gives CISOs and AppSec teams real-time visibility into how applications actually run in production. The platform correlates every request, response, resource, API and line of code to surface validated risks instead of theoretical findings, across API security, SCA reachability, detection and response, and AI/MCP protection. Co-headquartered in Tel Aviv and New York, Rein is used by enterprises such as Lemonade and HiBob to focus remediation on what truly matters in production.

Funding history · 1 round · $8.0M total

Q&A

What is Rein Security's primary business?
Rein Security provides an agentless application security platform that offers real-time visibility into how applications run in production, helping CISOs and AppSec teams identify and remediate validated risks across API security, SCA reachability, detection and response, and AI/MCP protection.
When was Rein Security founded?
Rein Security was founded in June 2024.
Where is Rein Security headquartered?
Rein Security is co-headquartered in Tel Aviv-Yafo, Israel, and New York, United States.
How much funding has Rein Security raised to date?
Rein Security has raised a total of $8,000,000 USD.
Who led Rein Security's most recent funding round?
Rein Security's most recent funding round, which occurred in January 2026, was led by Glilot Capital Partners.
What is Rein Security's current employee count?
Rein Security has 1-10 employees.
Who are the co-founders of Rein Security?
The co-founders of Rein Security are Matan Bar Efrat, who serves as CEO, and Netanel Rubin, who serves as CTO.
Which sector does Rein Security operate in?
Rein Security operates in the Cyber Security sector, specifically focusing on Application & Website Security.

Team · 1

Netanel Rubin
Founder · Co-founder & CTO
LinkedIn ↗

Sectors & technology

Primary sector
Cyber Security
Sub-sectors
Cyber SecurityApplication & Website Security
Target customers
Financial ServicesEnterprise & Professional ServicesHuman Resource & Employment ServicesEnterprisesGovernment & City
Business model
B2B
Full data — links, identifiers, deals & radar signals (jobs, patents, research, more)

External links

Websitereinsec.io
LinkedInlinkedin.com/company/103598882

Identifiers & details

Founded2024-6
Employees (exact)4

Radar intelligence

Web history (Wayback)

Domainreinsec.io

Certificate / subdomain footprint

Subdomains8