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.
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See also MDR providers and companies based in the United States.
| Company | Category | Based in | Founded | Ownership |
|---|---|---|---|---|
 SonicWall SonicWall provides unified cybersecurity for SMBs, MSPs, and IT teams. | Firewalls | Milpitas, United States | 1991 | Owned by Francisco Partners and Elliott Investment Management |
 Sophos Sophos provides cybersecurity products and managed detection and response services to organisations worldwide. | EDR and XDR | Atlanta, United States | 1999 | Owned by Thoma Bravo |
 STACK Cybersecurity Provides managed IT services, cybersecurity, compliance support and AI adoption guidance to businesses. | Managed security services | Livonia, United States | Owned by IT Solutions | |
 ThreatLocker Provides Zero Trust cybersecurity software controlling application execution, network access and privileged access for organisations. | Privileged access management | Orlando, United States | 2017 | Private |
 Tranzhalo Georgia start-up whose TranzSecure service flags cyber attacks, unknown devices and cargo theft across trucking fleets. | Automotive cybersecurity | Alpharetta, United States | Private | |
 UnderDefense UnderDefense provides managed detection and response, incident response, and compliance automation services. | Managed detection and response | New York, United States | 2017 | Private |
 Varonis Varonis provides data security software that protects data across cloud, SaaS and on-premises environments. | Data security posture management | Miami, United States | 2005 | Public, VRNS |
 Vectra AI Vectra AI provides AI-native security and observability to detect and respond to cyber threats. | Network detection and response | San Jose, United States | 2011 | Private |
 WatchGuard WatchGuard provides unified cybersecurity solutions for networks, endpoints, identities, and cloud environments. | Firewalls | Seattle, United States | 1996 | Owned by Vector Capital |
 XTIUM Provides managed IT services including security, cloud desktops, networks and AI deployment support. | Managed security services | Oldsmar, United States | Private |