Managed Security Services Cybersecurity Companies
Outside teams that monitor and run security operations for a company around the clock.
Sophos
United Kingdom
AI-native cybersecurity: endpoint, firewall, email, cloud and identity protection plus MDR, XDR and SIEM on the Sophos Fusion platform, sold via partners.
Expel
United States
Agentic AI-powered managed detection and response (MDR), managed SIEM, threat hunting and phishing services that work with customers' existing tools.
LevelBlue
United States
Pure-play MSSP delivering managed detection and response, XDR, incident response, SpiderLabs threat intelligence and security consulting.
WatchGuard
United States
MSP-focused unified security platform delivering firewalls, endpoint EDR/XDR, MFA, Wi-Fi and managed detection & response for SMBs and midmarket.
Darktrace
United Kingdom
AI cybersecurity company whose self-learning behavioral AI detects and autonomously responds to threats across network, email, cloud, OT, identity and AI.
Arctic Wolf
United States
Security operations leader delivering managed detection and response, managed risk, and incident response services.
Cynet
United States
AI-powered all-in-one security platform (EDR/XDR, SIEM, email, SaaS, identity) with 24/7 CyOps MDR, sold through MSPs and resellers to SMEs.
Red Canary (a Zscaler company)
United States
Managed detection and response across endpoints, identities, cloud and SaaS, combining agentic AI with 24/7 expert threat hunting; now Zscaler MDR.
Outpost24
Sweden
Swedish exposure management vendor: vulnerability scanning, attack surface management, threat intelligence, pen testing and Specops identity security.
HackerOne
United States
Continuous threat exposure management combining a global hacker community and agentic AI: bug bounty, pentest, AI red teaming, VDP and remediation.
G DATA CyberDefense
Germany
German endpoint security, XDR and 24/7 managed detection and response from Bochum, plus consumer antivirus, awareness training and incident response.
Huntress
United States
Managed EDR, ITDR, SIEM, posture management and security awareness training, run by a 24/7 AI-assisted SOC for SMBs, mid-market firms and MSPs.