MSSP Directory: Compare Managed Security Service Providers
This directory lists managed security service providers (MSSPs), the companies that run security monitoring, threat detection, and incident response for organizations without a full in-house security operations center. Filter the full list by service, industry, company size, and security platform to narrow it into a shortlist you can compare side by side.
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 best MSSP providers in 2026. To turn a long list into a focused evaluation set, use our MSSP provider shortlist guide.
RSM US (RSM Defense)
Best for: Mid-Market to Enterprise orgs, Government & Public Sector, Defense & Aerospace
RSM US is the largest US CPA and advisory firm offering a full-scale MSSP practice (RSM Defense) with CMMC Level 2 certification, the largest C3PAO status, and...
Safetech Innovations
Best for: Mid-Market to Enterprise orgs, Government & Public Sector, Energy & Utilities
Safetech Innovations is a Romanian cybersecurity company providing managed SOC services, threat intelligence, and compliance consulting across Eastern Europe.
SAIC Cybersecurity
Best for: Enterprise orgs, Government & Public Sector, Defense & Aerospace
SAIC (Science Applications International Corporation) is a Reston, VA-based defense technology company delivering managed cyber defense, zero trust, and securit...
SecurityHQ
Best for: SMB to Enterprise orgs, Retail & E-Commerce, Government & Public Sector
SecurityHQ provides managed security services through a global network of SOCs, offering MDR, SIEM management, and incident response with a focus on the Middle...
Securonix
Best for: Mid-Market to Enterprise orgs, Technology, Government & Public Sector
Securonix provides managed SIEM and UEBA services through its cloud-native analytics platform, specializing in insider threat detection and advanced behavioral...
SEK - Security Ecosystem Knowledge
Best for: Mid-Market to Enterprise orgs, Telecommunications, Energy & Utilities
SEK is a leading Latin American cybersecurity company delivering managed security operations, threat intelligence, and incident response services across Brazil...
Sequretek
Best for: SMB to Enterprise orgs, Manufacturing, Government & Public Sector
Sequretek is a cybersecurity company providing AI-powered managed detection and response, endpoint security, and identity management through its unified Percept...
Smarttech247
Best for: SMB to Enterprise orgs, Technology, Retail & E-Commerce
Smarttech247 is an Irish managed detection and response provider delivering 24/7 SOC services, threat intelligence, and compliance support from its security ope...
Socura
Best for: Mid-Market to Enterprise orgs, Technology, Legal
Socura is a UK managed detection and response provider delivering 24/7 SOC operations, threat hunting, and incident response with a focus on rapid threat contai...
SonicWALL
Best for: SMB to Enterprise orgs, Retail & E-Commerce, Education
SonicWall delivers managed security services through its network of global partners, leveraging its deep expertise in next-generation firewalls, threat intellig...
SpearTip
Best for: SMB to Enterprise orgs, Manufacturing, Education
SpearTip provides managed detection and response, cyber counterintelligence, and incident response services through its 24/7 Security Operations Center.
Stratejm
Best for: SMB to Enterprise orgs, Manufacturing, Technology
Stratejm is a Mississauga, Ontario-based NG-MSSP founded in 2013, pioneering Canada's first cloud-based Security-as-a-Service platform and recognized by Gartner...