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.
Cognizant Cybersecurity
Best for: Enterprise orgs, Manufacturing, Technology
Cognizant is a Nasdaq-listed global IT services company founded in 1994 with a dedicated cybersecurity practice, delivering managed security, identity managemen...
Comcast Business
Best for: Mid-Market to Enterprise orgs, Retail & E-Commerce, Manufacturing
Comcast Business provides managed security services through its SecurityEdge and enterprise cybersecurity portfolio, built on the capabilities acquired through...
Computacenter
Best for: Mid-Market to Enterprise orgs, Government & Public Sector, Manufacturing
Computacenter delivers managed cybersecurity services, SOC operations, and security consulting as one of Europe's largest independent IT infrastructure services...
Computer Systems Incorporated
Best for: SMB to Mid-Market orgs, Manufacturing
Computer Systems Incorporated (CSI) provides managed IT and cybersecurity services to businesses in the Omaha area and across the Midwest.
Converge Technology Solutions
Best for: Mid-Market to Enterprise orgs, Government & Public Sector, Technology
Converge Technology Solutions provides managed cybersecurity services, cloud solutions, and IT infrastructure management as a Canadian publicly traded technolog...
CoreTek
Best for: SMB to Mid-Market orgs, Manufacturing, Education
CoreTek provides managed IT and cybersecurity services to mid-market organizations in Michigan, specializing in cloud security, Microsoft solutions, and complia...
Corsica Technologies
Best for: Startups to Mid-Market orgs, Manufacturing, Legal
Corsica Technologies provides managed security services as part of a full-service IT managed services practice, serving small and mid-size businesses primarily...
Critical Start
Best for: Mid-Market to Enterprise orgs, Technology, Manufacturing
Critical Start is a Plano, TX-based MDR provider founded in 2012, known for their Cyber Operations Risk and Response (CORR) platform and transparent alert-resol...
CrossCipher Technologies
Best for: SMB to Mid-Market orgs, Technology
CrossCipher Technologies is an Indian cybersecurity company providing managed security services from Thrissur, Kerala.
CrowdStrike
Best for: SMB to Enterprise orgs, Retail & E-Commerce, Manufacturing
CrowdStrike provides fully managed endpoint protection and detection services built on the Falcon platform, offering turnkey MDR with their own security experts...
Custom Computer Specialists
Best for: SMB to Mid-Market orgs, Education, Nonprofit
Custom Computer Specialists is a New York-based managed IT and security services provider offering cybersecurity operations, cloud services, and compliance supp...
Cybanetix
Best for: Mid-Market to Enterprise orgs, Technology, Legal
Cybanetix is a UK-based managed security services provider delivering SOC operations, threat detection, and cybersecurity consulting to enterprises across Europ...