Browse MSSP Providers
Compare managed security service providers. Use filters to narrow your search. The directory covers providers across all major service categories (MDR, SIEM management, vulnerability scanning, incident response, and more) as well as a wide range of industries and security platforms. Use the filter sidebar to narrow results by the criteria that matter most to your organization, and combine multiple filters to zero in on the right shortlist. Each provider profile includes service details, certifications, platform expertise, and key operational facts so you can compare options without leaving the page. New to MSSPs? Read our guide on what managed security service providers do or see the top MSSPs in 2026.
LMNTRIX
Best for: Mid-Market to Enterprise orgs, Government & Public Sector, Technology
LMNTRIX is a global managed detection and response provider delivering an integrated MXDR platform with 13 security modules, 24/7 SOC coverage, unlimited DFIR,...
Lumen Technologies Security
Best for: Mid-Market to Enterprise orgs, Telecommunications, Government & Public Sector
Lumen Technologies is a Fortune 500 global network and cloud provider operating a 24/7 MSSP practice backed by Black Lotus Labs threat intelligence and 4 Asia-P...
Lumifi Cyber
Best for: SMB to Enterprise orgs, Manufacturing, Energy & Utilities
Lumifi Cyber is a Scottsdale-based MDR and MSSP provider with a SOC 2 Type II certified US-based SOC staffed by ex-military and DoD experts, offering the propri...
MAD Security
Best for: SMB to Mid-Market orgs, Defense & Aerospace, Government & Public Sector
MAD Security provides managed cybersecurity services to defense contractors and government organizations, specializing in CMMC compliance and threat monitoring.
Magen.AI
Best for: Mid-Market to Enterprise orgs, Technology, Government & Public Sector
Magen.AI is an Israeli cybersecurity firm providing AI-driven managed security services, data protection, and cloud security solutions for enterprises globally.
Malwarebytes
Best for: Startups to Mid-Market orgs, Education, Technology
Malwarebytes provides managed detection and response through its ThreatDown platform, offering endpoint protection and MDR services accessible to organizations...
Mandiant (Google Cloud)
Best for: Enterprise orgs, Government & Public Sector, Technology
Mandiant, now part of Google Cloud, delivers elite MDR and incident response services backed by 500+ threat intelligence analysts from 30+ countries with decade...
ManTech
Best for: Enterprise orgs, Government & Public Sector, Defense & Aerospace
ManTech International is a Herndon, VA-based technology and cybersecurity services company founded in 1968, delivering managed cyber defense, threat intelligenc...
Marlink Cyber
Best for: Mid-Market to Enterprise orgs, Transportation & Shipping, Energy & Utilities
Marlink provides managed cybersecurity services for the maritime and offshore energy industries, combining satellite connectivity expertise with specialized mar...
Mnemonic
Best for: Mid-Market to Enterprise orgs, Government & Public Sector, Energy & Utilities
Mnemonic is a Norwegian cybersecurity services company providing managed detection and response, threat intelligence, and security consulting, with strong posit...
NCC Group
Best for: Mid-Market to Enterprise orgs, Technology, Government & Public Sector
NCC Group delivers MDR, threat intelligence, and security consulting from its global SOC network, with deep expertise in assurance and technical security testin...
Nclose
Best for: SMB to Enterprise orgs, Energy & Utilities, Manufacturing
Nclose is a South African managed cybersecurity services provider delivering SOC operations, MDR, and security consulting for organizations across Southern Afri...