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.
Peraton
Best for: Enterprise orgs, Government & Public Sector, Defense & Aerospace
Peraton provides managed cybersecurity operations, threat intelligence, and cyber defense for US government and intelligence community clients, as a leading nat...
Pondurance
Best for: SMB to Mid-Market orgs, Manufacturing, Government & Public Sector
Pondurance is an Indianapolis-based MDR firm founded in 2008 with a US-only SOC model, delivering human-led threat hunting and 24/7 detection and response with...
Presidio
Best for: Mid-Market to Enterprise orgs, Legal, Government & Public Sector
Presidio is a global digital services provider and Top 250 MSSP, delivering managed detection and response, cloud security, and comprehensive cybersecurity serv...
Proficio
Best for: Mid-Market to Enterprise orgs, Technology, Retail & E-Commerce
Proficio is the inventor of SOC-as-a-Service, founded in 2010 in Carlsbad, CA, with global SOCs in San Diego, Barcelona, and Singapore delivering 24/7 MDR to en...
Proper Sky
Best for: SMB to Mid-Market orgs, Nonprofit
Proper Sky is a managed IT and cybersecurity provider based in Abington, Pennsylvania, delivering real-time security monitoring and incident response services w...
ProVision
Best for: Mid-Market to Enterprise orgs, Telecommunications, Government & Public Sector
ProVision is a Romanian cybersecurity company providing managed security services, SOC operations, and compliance consulting to organizations across Eastern Eur...
PwC Cybersecurity
Best for: Enterprise orgs, Energy & Utilities, Government & Public Sector
PwC delivers managed cyber defense, threat intelligence, and security operations as one of the Big Four professional services firms, serving global enterprise a...
PwC UK - Managed Cyber Services
Best for: Enterprise orgs, Energy & Utilities, Telecommunications
PwC UK's Managed Cyber Services delivers enterprise-grade security operations, threat intelligence, and cyber defense services backed by one of the world's larg...
Quorum Cyber
Best for: SMB to Enterprise orgs, Government & Public Sector, Manufacturing
Quorum Cyber is a UK-based MSSP founded in 2016 in Edinburgh, offering Microsoft-native managed detection and response to 350+ global clients and ranked #50 on...
Rackspace Cybersecurity
Best for: Mid-Market to Enterprise orgs, Technology, Retail & E-Commerce
Rackspace Technology is a global cloud and managed services provider founded in 1998 in San Antonio, TX, delivering Fanatical Security managed services with 24/...
Rapid7
Best for: SMB to Enterprise orgs, Technology, Manufacturing
Rapid7 provides managed detection and response powered by the InsightIDR platform, combining their own security technology with SOC expertise for continuous thr...
RCZ Solucoes em Seguranca
Best for: Mid-Market to Enterprise orgs, Retail & E-Commerce
RCZ provides cybersecurity solutions and managed security services to organizations in Brazil and Latin America, specializing in threat detection and compliance...