Rein Security logo — The Security Platform for Enterprise Agents

Rein Security

The Security Platform for Enterprise Agents

Founded 2024 36 employees

General Information

Company Name Rein Security
Founded Year 2024
Employees 36
Business Model B2B, Platform, SaaS
Revenue Model Subscription, Usage Based, Tiered Pricing
Offices as of Oct 2026
Wilmington, United States
Social

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How does Rein Security compare?

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A one-page PDF brief: what it does, key facts, the last 90 days of dated moves and questions worth asking. Re-checked on the day you order. See a sample

Recorded by Bounce Watch from public sources. Every entry below carries the date we observed it, and when we have not looked recently the page says so rather than leaving silence to imply nothing happened.

Major Customer Win Oct 21, 2026

Rein Security announced a major customer win with Lemonade, an AI-native insurtech company, highlighting their use of Rein to secure AI agents and achieve 100% attack-detection accuracy.

Promotion Launched Oct 21, 2026

Rein Security has launched a promotion offering free technical assistance to Japanese companies and engineers regarding the critical PHP vulnerability.

Award Received Oct 20, 2026

Rein Security was named an Enterprise Group winner among the Startup Battlefield 200 at TechCrunch Disrupt 2026.

Event Participation Oct 12, 2026

Rein Security's CEO, Matan Bar-Efrat, was a guest on the On Security podcast, discussing agent security.

In The News Oct 09, 2026

Featured on AI Insider: Rein Security Raises $25M to Secure the AI Agents Enterprises Build and Stop the...

In The News Oct 09, 2026

Featured on Yahoo Finance: Rein Security’s $25M Series A Points to Where the Agent Security Demand Is Reall...

+1 more signal in last 30 days

AI Insight

Bounce Watch AI
1 week ago

Rein Security is exhibiting exceptional early-stage momentum, marked by a substantial 5x customer acquisition within a short timeframe. This rapid commercial traction is further bolstered by critical industry validation, including being recognized as a "Most Promising AI Company" and demonstrating thought leadership at Black Hat. These developments collectively underscore Rein's strong market fit and strategic emergence as a key player in the nascent but critical Enterprise AI security sector.

Signal Types
Traction Recognition Market Validation
Strategic Labels
Rapid Customer Growth Industry Leadership AI Security
Next Move: Fundraising
·
Impact: 9/10
·
Ideal For: AI Security Investors — Seed to Series A

About Rein Security

Rein Security is a cybersecurity company specializing in providing a security layer for custom-built enterprise AI agents. The company is headquartered in an unspecified location and serves clients across various sectors, including finance, healthcare, SaaS, and energy.

Founded in 2024, Rein Security offers an Enterprise AI Security Platform that encompasses services such as adversarial AI mitigation, real-time agent monitoring, and agentic data sovereignty. The platform caters to enterprises with AI systems, focusing on compliance and governance, vulnerability management, and data privacy. Operating on a B2B platform model, Rein Security generates revenue through subscription, usage-based, and tiered pricing models, ensuring tailored solutions for its diverse customer base.

Business keywords: Enterprise AI Security, Enterprise Agents, Data Privacy, Compliance and Governance, Vulnerability Management, Supply Chain Security, Agent Visibility, AI Governance, Finance Security, Healthcare Security, SaaS Security, Energy Security, Insurance Technology

Services & Products

Enterprise AI Security Platform
Adversarial AI Mitigation
Real-time Agent Monitoring
AI Execution Layer Protection
Agentic Data Sovereignty
Compliance Support

Target Customers

Enterprises with AI Systems Finance Sector Healthcare Organizations SaaS Providers Retail Sector Security Teams

No funding data available for Rein Security yet.

Rein Security Alternatives & Competitors

Rein Security vs
Zenity
Zenity United States

Secure AI Agents Everywhere

Venture round
267 employees
Cloud Infrastructure, Cyber Security
Rein Security vs
Soveren
Soveren United Kingdom

Sensitive data observability (DSPM)

Seed
15 employees
AI, B2B
Rein Security vs
SecureSlice
SecureSlice United States

GenAI and SaaS security.

1 employees
Analytics, Enterprise Software

FAQ About Rein Security

The Security Platform for Enterprise Agents
Rein Security was founded in 2024.
Rein Security has a B2B, Platform and SaaS business model. Its revenue comes from Subscription, Usage Based and Tiered Pricing.
Rein Security has approximately 36 employees.
Rein Security offers: Enterprise AI Security Platform, Adversarial AI Mitigation, Real-time Agent Monitoring, AI Execution Layer Protection, Agentic Data Sovereignty, Compliance Support.
Top alternatives and competitors to Rein Security include Zenity, Soveren, SecureSlice, Capture The Bug, OneTrust. These companies operate in related industries and serve comparable markets. You can compare them side by side on Bounce Watch.
Rein Security and Zenity are both companies in similar industries. Compare their funding, team size, growth signals, and market position on Bounce Watch to see which one fits your needs.

Source: BounceWatch company record for Rein Security, https://bouncewatch.com/company/reinsec, updated 17 October 2026. When citing, please name BounceWatch and link this page.

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