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Rein Security

Rein Security

Private
New York City, New YorkCybersecurityhttps://reinsec.io/

Last Round

Seed

Jan 28, 2026

Total Funding Raised

$8M

Momentum

Top 25%

of companies Caplight tracks

Company Overview

Rein Security is a cybersecurity company that provides an enterprise agentic AI security platform designed to provide runtime visibility, risk context, and policy controls for AI agents and applications.

Sector

Cybersecurity

Verticals

Application Security, Cloud Security, Compliance & Risk, Vulnerability Management

Business Model

B2B

Customer Profile

Subscription SaaS

AI Layer

Application

Keywords

agentic AI securityAI agent securityAI Agent Securityruntime guardrailsAI governanceapplication securityruntime visibilityprompt injection protectionAI risk assessmentsidecar securityenterprise AI securityLLM securitybehavioral baseliningmodel control planeMCP

Historical Pricing

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Caplight Momentum Score

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Rein Security Comparables

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Rein Security comparables — related companies by embedding similarity
CompanySimilarityMarket Cap
Enkrypt AI
87%
Pillar Security
83%
Averta
82%

Rein Security Funding Rounds

Historical fundraising activity

Data table
RoundDateAmount RaisedValuationInvestorsSources
SeedJan 28, 2026

Key People

Founding team and executive leadership

Matan Bar-Efrat

Co-Founder & CEO

Founding Team

Rein Security Investors

Notable investors and investment history

Rein Security investors
InvestorRounds
Qino Cyber CapitalSeed
Glilot Capital PartnersSeed

Market signals

Structured signals derived from secondary market and firmographic data.

  • May 19, 2026

    Monthly visitors grew 292% MoM, reaching 4.1K.

  • Apr 12, 2026

    Grew 238% QoQ, from 8 to 27 employees.

Rein Security Filings

SEC and related filings with document metadata.

Data table
TypedDateAmount OfferedAmount SoldFillingPagesDownload
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Rein Security Filings

SEC and related filings with document metadata.

Frequently Asked Questions

Common questions about Rein Security's valuation, stock price, and market status.

Firmographic Details

HeadquartersNew York City, New York
Employee Range29
Year Founded2024
Last FundingJan 28, 2026

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