CISO Tribune

Vendor comparison · 2 companies

Prime Security vs Reflex Security

Prime Security sells an AI security review platform designed for software development lifecycles. Reflex Security says a breach cannot be controlled, and that a team cannot pick the day, the attacker or the exploit. CISO Tribune files both under Breach simulation and automated pen-testing. This page sets the two records side by side: what each sells, where it is based, who owns and funds it, the customers it names and its recent news, each fact numbered to its source.

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  • Prime Security
  • Reflex Security
Prime Security vs Reflex Security: Products, Customers and Funding Compared
Prime SecurityPrime Security sells an AI security review platform designed for software development lifecycles.primesec.aiReflex SecurityReflex Security says a breach cannot be controlled, and that a team cannot pick the day, the attacker or the exploit.reflexsecurity.io
What it sells
  • Autonomous Design Reviews[1][4]AI agents review specs, architecture and data flows to uncover security risks before code is written.
  • Reflex[1][2][3]A crisis simulation platform that builds a live crisis from a team's real environment and adapts to each decision the team makes.
Categories
Headquarters
Not stated on its pagesNot stated on its pages
Founded
Not stated on its pagesNot stated on its pages
Ownership and funding
Not stated on its pagesNot stated on its pages
Named customers
Not stated on its pagesNot stated on its pages
Recent news
  • December 9, 2025Prime Security said it raised $20 million in early-stage funding to fuel go-to-market expansion and its Agentic Product Security Platform.[11]
Not stated on its pages
G2 and Gartner Peer Insights
  • G2: Not stated on its pages
  • Gartner Peer Insights: Not stated on its pages
  • G2: listed, seen November 10, 2026[4]
  • Gartner Peer Insights: Not stated on its pages
Who it fits
Not written yetNot written yet
Last verified
November 9, 2026November 5, 2026

Where they overlap

  • Prime Security and Reflex Security are both filed under Breach simulation and automated pen-testing.

Where they differ, field by field

  • Prime Security's primary category is Application security posture management; Reflex Security's is Breach simulation and automated pen-testing.
  • Prime Security is also filed under Static application security testing and Software supply chain security. Reflex Security is also filed under Incident response and forensics and Security awareness training.
  • Prime Security lists Autonomous Design Reviews. Reflex Security lists Reflex.

What it sells: Prime Security

What Autonomous Design Reviews does[1][4]
Prime checks every design, scores every risk and validates every fix in code. Prime can produce a threat model and combines design-level analysis with actual code.

What it sells: Reflex Security

What Reflex does[1][2][3]
Reflex builds a tailored scenario in minutes, catered to the real environment, tools and threats of the team. The team works a live breach while an adaptive adversary and pressured stakeholders push back in real time. AI agents play every side of the breach and react to each call the team makes.

Questions about Prime Security and Reflex Security

What do Prime Security and Reflex Security sell?
Prime Security sells Autonomous Design Reviews. Reflex Security sells Reflex.
Are Prime Security and Reflex Security in the same category?
They share Breach simulation and automated pen-testing. Prime Security's primary category is Application security posture management and Reflex Security's is Breach simulation and automated pen-testing.
What have Prime Security and Reflex Security announced recently?
December 9, 2025: Prime Security said it raised $20 million in early-stage funding to fuel go-to-market expansion and its Agentic Product Security Platform.

About Prime Security

Prime Security sells an AI security review platform designed for software development lifecycles. Prime Agents learn an organisation's architecture, code and risk history. Prime Security describes one platform covering the SDLC before the code, in the code and after the code. Prime agents work autonomously inside the customer environment, mapping every application, policy, resource and data flow. Prime agents live inside the development lifecycle and understand designs, code, cloud and policies.[1][2][3][4]

Prime Security says AI agents, multiple stacks and complex development processes have created an attack surface that no existing security tool was built to handle. Prime Security states its aim as connecting architecture, code and cloud to find every exploitable attack vector before attackers do. Prime tracks every asset as it moves from design to deployment. Prime learns an organisation's architecture, past decisions and risk profile, and each review builds on the last one.[3][4][5]

Autonomous design reviews use AI agents to review specs, architecture and data flows to uncover security risks before code is written. Prime checks every design, scores every risk and validates every fix in code. Prime can produce a threat model, and Prime combines design-level analysis with actual code. Prime Security covers architecture reviews, threat modeling, documentation analysis, and security analysis tied to tickets and code changes. Prime finds vulnerabilities and logic flaws in AI-generated and human-written code. Prime checks every PR the moment it opens, whether a developer or an agent wrote it. Prime checks each pull request for approved auth flows, encryption methods, architecture patterns and framework requirements. Prime reviews every PR against the policies that apply to that repo, validates each finding and hands the agent the context to fix it. Prime logs every review, finding, validation and fix.[1][2][3][4][6]

Prime sets security guardrails for agents like Cursor and Claude Code, catching insecure code at the PR before it merges. Prime Security embeds security policies directly into AI coding workflows. Prime inventories every package in the dependency graph, direct and transitive, and matches it against known CVEs and the license policy. Prime identifies vulnerable packages accessible to attackers with proven attack paths. Exploitable findings arrive with the full attack path, and unreachable ones arrive marked as noise, with the reasoning attached. Prime checks every dependency against the license policy in the same scan. Prime runs continuous attack path analysis with source, architecture and controls. Prime maps how services talk, where data flows and how an attacker would chain it all together. Prime evaluates multi-step attacks the way an attacker plans them.[1][3][4][7]

Prime delivers a tailored fix wherever the work happens, with the PR, Slack or a Jira ticket for developers. For dev agents, Prime delivers context over MCP, so mitigation runs with no human in the loop. Prime proposes mitigations built for the codebase, delivers them to developers and agents and validates the fix landed in code. Agents run continuously across planning and development workflows without requiring custom engineering from the customer team. Prime integrates with Github, Gitlab, Claude Code, Cursor, Jira, Confluence, Google Drive, Azure DevOps, Linear, and Git Issues.[2][3][4]

Prime Security supports Product Security Engineers and Security Architects. MX adopted Prime Security. MX is a financial data platform that powers secure data access, analytics, and personalized money experiences for banks, fintechs, and financial institutions. Oscar Health adopted Agentic Security Architect from Prime to automate security reviews and proactively identify risk across all engineering work. Oscar Health is a healthcare technology company that combines digital experiences with health insurance services. ThoughtSpot adopted Agentic Security Architect from Prime to scale security reviews and threat modeling across its expanding engineering surface area. ThoughtSpot is an analytics platform that enables organizations to explore, analyze, and act on data at scale.[1][4][8][9][10]

Prime Security on the record

Sources

Prime Security full record

  1. [1]primesec.aiPrimeSec Inc. · primesec.ai · undated page, accessed November 9, 2026 · Tier A
  2. [2]Build vs Buy: Automating Security Design Reviews at Scale | Prime SecurityPrime Security · undated page, accessed November 10, 2026 · Tier A
  3. [3]Prime Security | Agentic Product Security PlatformPrime Security · undated page, accessed November 10, 2026 · Tier A
  4. [4]Prime Security Platform | AI Agents for Product SecurityPrime Security · undated page, accessed November 10, 2026 · Tier A
  5. [5]About Prime Security | Agentic AI Security CompanyPrime Security · undated page, accessed November 10, 2026 · Tier A
  6. [6]AI Security Code Reviews | Prime SecurityPrime Security · undated page, accessed November 10, 2026 · Tier A
  7. [7]Supply Chain Security | Prime SecurityPrime Security · undated page, accessed November 10, 2026 · Tier A
  8. [8]How MX Used Prime to Scale Product Security Without Adding HeadcountPrime Security · undated page, accessed November 10, 2026 · Tier A
  9. [9]How Oscar Health Scaled Secure Development and Risk Prioritization Across EngineeringPrime Security · undated page, accessed November 10, 2026 · Tier A
  10. [10]How ThoughtSpot Scaled Security Coverage and Confidence in a High-Velocity Engineering EnvironmentPrime Security · undated page, accessed November 10, 2026 · Tier A
  11. [11]Prime Security raises $20M early-stage funding to scale its agentic product security platform - SiliconANGLESiliconANGLE · published December 9, 2025 · Tier B

Reflex Security full record

  1. [1]reflexsecurity.ioReflex Security · reflexsecurity.io · undated page, accessed November 5, 2026 · Tier A
  2. [2]How ai powered tabletop exercises improve incident response readinessReflex Security · reflexsecurity.io · undated page, accessed November 5, 2026 · Tier A
  3. [3]Reflex SecurityReflex Security · undated page, accessed November 10, 2026 · Tier A
  4. [4]Reflex Security Reviews 2026: Details, Pricing, & FeaturesG2 · undated page, accessed November 10, 2026 · Tier C

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