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 MSSPs and companies based in the United States.
| Company | Category | Based in | Founded | Ownership |
|---|---|---|---|---|
7AI 7AI provides AI agents that automate security operations centre tasks for enterprises. | Agentic SOC tools | Boston, United States | 2024 | Private |
Alcott Enterprises Managed IT Services & Cybersecurity Alcott Enterprises is a managed IT service provider and cybersecurity company based in Los Angeles. | Managed security services | Torrance, United States | 2014 | Private |
A Armor Provides cloud security, compliance and managed detection and response services to regulated industries. | Managed detection and response | Plano, United States | 2009 | Private |
AT&T Cybersecurity AT&T Cybersecurity provides network security services to businesses of all sizes. | SASE and SSE | San Mateo, United States | 2007 | Owned by WillJam Ventures |
BARR Advisory BARR Advisory helps organisations establish, manage, and audit cybersecurity and compliance programmes. | Compliance audits (SOC 2, ISO 27001) | Kansas City, United States | Private | |
Black Hills Information Security Community-driven penetration testing firm known for free security education, open-source tools, Wild West Hackin' Fest, and practical offensive security services. | Penetration testing | Spearfish, United States | 2008 | Private |
Booz Allen Hamilton Cybersecurity consulting and engineering for US government and industry, including threat hunting, zero trust, incident response and defence of critical infrastructure and weapon systems. | Security consulting and vCISO | McLean, United States | Private | |
Boston Managed IT Boston Managed IT is a managed service provider based in Waltham, Massachusetts, founded in 2017. | Managed security services | Waltham, United States | 2015 | Private |
Clone Systems Provides penetration testing, PCI ASV scanning, and managed security services for compliance and threat detection. | Penetration testing | Philadelphia, United States | 1998 | Private |
Cloudrise Cloudrise provides security services to enterprises and technology partners. | Managed security services | Grand Junction, United States | 2019 | Part of Exclusive Networks |
Critical Start Critical Start provides managed detection and response services to monitor, investigate, and resolve security threats for organisations. | Managed detection and response | Plano, United States | 2012 | Owned by Vista Equity Partners |
CyberSheath CyberSheath provides cybersecurity compliance services for DOD contractors, focusing on CMMC, DFARS, and NIST standards. | GRC and compliance automation | Reston, United States | 2012 | Private |
Cyderes Cyderes provides managed cybersecurity services including identity, threat detection, and exposure management. | Managed detection and response | Kansas City, United States | Private | |
Dell Technologies Computer and IT infrastructure maker whose PowerProtect Data Manager software and Data Domain appliances back up data, detect ransomware and speed recovery. | Backup and cyber recovery | Round Rock, United States | Private | |
Druva Druva provides a fully managed SaaS platform for data backup, recovery, and cyber resilience. | Backup and cyber recovery | Sunnyvale, United States | 2008 | Private |
EC-Council EC-Council is a cybersecurity certification and training body. | Security awareness and human risk | United States | 2001 | Private |
Expel Expel provides managed detection and response security services using AI and human analysts. | Managed detection and response | Herndon, United States | 2016 | Private |
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 |
Foresite Cybersecurity Foresite provides managed detection and response services using agentic AI for security operations. | Managed detection and response | Overland Park, United States | Private | |
Globalgig Globalgig provides managed security and network services to enterprises across multiple countries. | Managed security services | San Antonio, United States | Private | |
GuidePoint Security US-headquartered cybersecurity consultancy with 800+ employees, serving ~40% of the Fortune 500. FedRAMP 3PAO, PCI QSA, and HITRUST accreditations. | Managed security services | Reston, United States | 2011 | Private |
IBM IBM is a technology company that sells software, infrastructure, and consulting services. | SIEM | Armonk, United States | 1911 | Public, IBM |
Integris IT Integris provides managed IT, cybersecurity, AI and cloud services to small and midsize businesses. | Managed security services | Cranbury, United States | Private | |
IntelliGRC IntelliGRC provides software that helps managed service providers automate cybersecurity compliance and audit readiness. | GRC and compliance automation | Fairfax, United States | Private | |
Jones IT Jones IT provides managed IT services, cybersecurity, and compliance support to businesses in the San Francisco Bay Area. | Managed security services | San Francisco, United States | 2002 | Private |
Kyndryl Managed security operations, threat intelligence and incident response services delivered from global security operations centres by an IT infrastructure services provider. | Managed security services | New York, United States | Private | |
LevelBlue (formerly Trustwave) Managed security provider that now runs Trustwave's SpiderLabs penetration testing team, with CREST-accredited testing, red and purple teaming, and deep PCI DSS expertise. | Managed detection and response | Chicago, United States | 1995 | Private |
MonsterCloud MonsterCloud provides managed cloud, IT and cyber security services, including ransomware recovery, to businesses across the United States. | Managed security services | Hollywood, United States | Private | |
N-able N-able provides cybersecurity and IT management software for managed service providers and businesses. | Managed security services | Burlington, United States | Public, NABL | |
Netrio Netrio provides managed IT, cybersecurity, cloud, and connectivity services to mid-market enterprises. | Managed security services | McKinney, United States | Private | |
NETSCOUT NETSCOUT provides real-time network visibility, observability, cybersecurity, and DDoS protection solutions. | DDoS protection | Westford, United States | 1984 | Public, NTCT |
Network Brainiacs Provides managed IT support, cybersecurity services and custom software to small businesses. | Managed security services | Mount Arlington, United States | 2011 | Private |
nuHarbor nuHarbor provides cybersecurity services and managed security operations to organisations across government, healthcare, finance and enterprise. | Managed security services | United States | 2013 | Private |
Ontinue Ontinue provides managed detection and response services for Microsoft security customers. | Managed detection and response | Redwood City, United States | Owned by Quorum Cyber | |
Optiv Optiv advises, deploys, and operates cybersecurity programs for organizations. | Managed security services | Leawood, United States | 1996 | Owned by KKR |
Potenza Services Potenza Services is a veteran-owned firm based in Tampa, Florida, founded in 2012. | OT and ICS security | Q49255, United States | 2012 | Private |
PowerDMARC PowerDMARC provides a cloud-based platform for email authentication and domain security. | DMARC and email authentication | Plano, United States | 2020 | Private |
Quzara Quzara provides FedRAMP compliance advisory and managed detection and response services. | Managed detection and response | Vienna, United States | Private | |
Redspin Miami-based cybersecurity firm with 300+ employees and deep healthcare/HIPAA expertise. Delivering pen testing since 2000. | Compliance audits (SOC 2, ISO 27001) | Miami, United States | 2000 | Owned by Clearwater |
REJIS REJIS provides technology solutions for public safety and government agencies. | Managed security services | St. Louis, United States | 1974 | Private |
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 | |
Swimlane Swimlane provides agentic AI automation for security operations, vulnerability management, and compliance. | SOAR and security automation | Denver, United States | 2015 | Private |
Team Cymru Team Cymru provides global threat intelligence from internet traffic for proactive defence. | Threat intelligence | Lake Mary, 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 |
XTIUM Provides managed IT services including security, cloud desktops, networks and AI deployment support. | Managed security services | Oldsmar, United States | Private | |
Z-JAK Technologies Z-JAK Technologies is a Louisville-based provider of managed IT and cybersecurity services for small and midsize businesses, typically with 5 to 150 employees. | Managed security services | Louisville, United States | 2020 | Private |