CISO Tribune

Vendor comparison · 2 companies

Prime Security vs Semgrep

Prime Security sells an AI security review platform designed for software development lifecycles. Semgrep sells an application security platform that unifies SAST, SCA, secrets scanning, and malware protection. CISO Tribune files both under Static application security 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
  • Semgrep
Prime Security vs Semgrep: Products, Customers and Funding Compared
Prime SecurityPrime Security sells an AI security review platform designed for software development lifecycles.primesec.aiSemgrepSemgrep sells an application security platform that unifies SAST, SCA, secrets scanning, and malware protection.semgrep.dev
What it sells
  • Autonomous Design Reviews[1][4]AI agents review specs, architecture and data flows to uncover security risks before code is written.
  • Semgrep Malware Firewall[11]Blocks malicious and compromised open-source packages on developer machines.
Categories
Headquarters
Not stated on its pagesSan Francisco, United States[4]
Founded
Not stated on its pages2017[2]
Ownership and funding
Not stated on its pagesPrivately held[3][5][7]
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]
  • August 11, 2026Semgrep and Replit expanded their partnership so that Semgrep Guardian secrets scanning is built into the Replit Security Center.[6]
G2 and Gartner Peer Insights
  • G2: Not stated on its pages
  • Gartner Peer Insights: Not stated on its pages
  • G2: listed, seen November 3, 2026[7]
  • Gartner Peer Insights: Not stated on its pages
Who it fits
Not written yetFrom its own pages, Semgrep sells mainly to AppSec teams and the developers who write code. Semgrep describes helping AppSec teams focus on real risk and helping developers fix issues safely. Semgrep also describes use cases for organizations with sprawling, legacy-heavy codebases that hold large volumes of personal and financial data. Semgrep addresses organizations whose developers already generate code with AI. Semgrep describes connecting to source code management and continuous integration tools such as GitHub and GitLab.
Last verified
November 9, 2026September 27, 2026

Where they overlap

  • Prime Security and Semgrep are both filed under Static application security testing.

Where they differ, field by field

  • Prime Security's primary category is Application security posture management; Semgrep's is Static application security testing.
  • Prime Security is also filed under Software supply chain security and Breach simulation and automated pen-testing. Semgrep is also filed under Software composition analysis and Secrets detection.
  • Prime Security lists Autonomous Design Reviews. Semgrep lists Semgrep Malware Firewall.
  • Semgrep is headquartered in San Francisco, United States.
  • Semgrep was founded in 2017.
  • Semgrep is privately held.

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: Semgrep

What Semgrep Malware Firewall does[11]
Semgrep Malware Firewall runs silently on developer machines, intercepting network requests to any public registry. It blocks malicious and compromised open-source packages from reaching the environment.

Questions about Prime Security and Semgrep

What do Prime Security and Semgrep sell?
Prime Security sells Autonomous Design Reviews. Semgrep sells Semgrep Malware Firewall.
Are Prime Security and Semgrep in the same category?
They share Static application security testing. Prime Security's primary category is Application security posture management and Semgrep's is Static application security testing.
Where are Prime Security and Semgrep headquartered?
Semgrep is headquartered in San Francisco, United States.
When were Prime Security and Semgrep founded?
Semgrep was founded in 2017.
Who owns Prime Security and Semgrep?
Semgrep is privately held.
Who are Prime Security and Semgrep sold to?
From its own pages, Semgrep sells mainly to AppSec teams and the developers who write code.
What have Prime Security and Semgrep 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. August 11, 2026: Semgrep and Replit expanded their partnership so that Semgrep Guardian secrets scanning is built into the Replit Security Center.

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

Semgrep full record

  1. [1]semgrep.devSemgrep · semgrep.dev · undated page, accessed September 27, 2026 · Tier A
  2. [2]AboutSemgrep · semgrep.dev · undated page, accessed September 27, 2026 · Tier A
  3. [3]Semgrep announces 100m series d funding to advance ai powered code security 302367780Semgrep via PR Newswire · prnewswire.com · published February 5, 2025 · Tier A
  4. [4]LocationsCraft.co · craft.co · undated page, accessed September 27, 2026 · Tier C
  5. [5]Semgrep App Security Platform | AI-assisted SAST, SCA and Secrets DetectionSemgrep · undated page, accessed October 28, 2026 · Tier A
  6. [6]Semgrep and Replit Expand Integration to Keep Pace With AI-Generated Code at ScaleBusiness Wire · published August 11, 2026 · Tier A
  7. [7]Semgrep Reviews 2026: Details, Pricing, & Features - G2G2 · undated page, accessed October 28, 2026 · Tier C
  8. [8]Semgrep AppSec Platform | SemgrepSemgrep · undated page, accessed November 3, 2026 · Tier A
  9. [9]All scans in Semgrep Code now use Pro Engine (cross-function analysis + Pro-only languages) | SemgrepSemgrep · undated page, accessed November 3, 2026 · Tier A
  10. [10]In-app code snippets are now supported for cross-file dataflow traces | SemgrepSemgrep · undated page, accessed November 3, 2026 · Tier A
  11. [11]Protect Against Open-Source Malware Attacks | SemgrepSemgrep · undated page, accessed November 3, 2026 · Tier A
  12. [12]Get a Slack alert when a supply chain incident affects your dependencies | SemgrepSemgrep · undated page, accessed November 3, 2026 · Tier A
  13. [13]Semgrep Guardian | SemgrepSemgrep · undated page, accessed November 3, 2026 · Tier A
  14. [14]Semgrep Agentic Workflows—Scale AppSec with Semgrep and AI agents | SemgrepSemgrep · undated page, accessed November 3, 2026 · Tier A
  15. [15]Run Semgrep Assistant on selected findings (auto-triage, auto-fix, component tagging) | SemgrepSemgrep · undated page, accessed November 3, 2026 · Tier A
  16. [16]Secure Guardrails | SemgrepSemgrep · undated page, accessed November 3, 2026 · Tier A
  17. [17]New insight into backlogs, developer engagement, and security posture | SemgrepSemgrep · undated page, accessed November 3, 2026 · Tier A
  18. [18]Filter by "project tag" | SemgrepSemgrep · undated page, accessed November 3, 2026 · Tier A

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