All companies
Every cybersecurity vendor and service firm on the list. Tick the filters to build a shortlist, then open a profile to see who owns the company and what it does. You can also browse by category or country, or see recent deals.
Results
See also API security vendors and companies based in the United States.
| Company | Category | Based in | Founded | Ownership |
|---|---|---|---|---|
 A10 Networks A10 Networks provides secure, high-performance networking solutions for applications and AI workloads. | DDoS protection | San Jose, United States | 2004 | Public, ATEN |
 Akto Akto provides a platform to secure AI agents, MCPs, and LLMs for enterprises. | AI and LLM security | San Francisco, United States | Private | |
 Appdome Appdome provides a no-code platform for building security and anti-fraud defenses into mobile apps. | Mobile security | Redwood City, United States | Private | |
 Arcjet Arcjet provides runtime security for AI agents, enforcing policies at the action boundary. | AI and LLM security | San Francisco, United States | 2023 | Private |
 Black Duck Black Duck provides application security testing tools for software development. | Application security testing | Burlington, Massachusetts, United States | 2002 | Owned by Clearlake Capital and Francisco Partners |
 Cequence Security Cequence Security protects applications, APIs, and AI agents from attacks and abuse. | API security | Santa Clara, United States | 2014 | Private |
 Checkmarx Checkmarx provides application security testing software that scans code for vulnerabilities. | Application security testing | Tel Aviv, United States | 2006 | Owned by Hellman & Friedman |
 Cloudflare Cloudflare provides a global network for security, performance, and full-stack development. | SASE and SSE | San Francisco, United States | 2009 | Public, NET |
 Contrast Security Contrast Security provides runtime application security that detects and blocks attacks from inside running applications. | Application security testing | Pleasanton, United States | Private | |
 Darwinium Darwinium provides edge-based intent intelligence to prevent digital fraud and abuse across customer journeys. | Fraud and payment fraud prevention | San Francisco, United States | Private | |
 Data Theorem Data Theorem provides application security for mobile, API, cloud, and AI-driven applications. | API security | Palo Alto, United States | 2013 | Private |
 F5 F5 provides application delivery and security solutions for hybrid multicloud environments. | WAF and bot protection | Seattle, United States | 1996 | Public, FFIV |
 Fastly Fastly provides an edge cloud platform that helps businesses deliver, secure, and deploy applications and AI workloads. | WAF and bot protection | San Francisco, United States | 2011 | Public, FSLY |
 Google World-renowned cybersecurity firm now part of Google Cloud, delivering threat intelligence-led penetration testing and red teaming informed by front-line incident response experience. | Penetration testing | Mountain View, United States | 2004 | Private |
 Harness Harness provides an AI-native software delivery platform for DevOps, testing, security, and cost optimization. | Application security testing | San Francisco, United States | 2017 | Private |
 Imperva Imperva is a cybersecurity company that provides application security and data security. | WAF and bot protection | San Mateo, United States | 2002 | Owned by Thales |
 Invicti Invicti provides web application and API security testing software for enterprises. | Application security testing | Austin, United States | 2005 | Private |
 Mend.io Mend.io provides application security and AI security software for code and AI systems. | Application security testing | Burlington, United States | 2011 | Private |
 Nowsecure NowSecure provides mobile app security and AI governance. | Mobile security | Chicago, United States | 2009 | Private |
 Salt Security Salt Security provides a platform to discover and secure AI agents, MCP servers, and APIs. | API security | Palo Alto, United States | 2018 | Private |
 Wallarm Wallarm provides an AI security and API security platform for enterprises running AI on AWS. | API security | Austin, United States | Private |