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.
Palo Alto Networks Unit 42
Best for: Mid-Market to Enterprise orgs, Retail & E-Commerce, Manufacturing
Palo Alto Networks delivers managed extended detection and response through its Cortex XMDR service, backed by Unit 42 threat research and incident response exp...
Performanta
Best for: Mid-Market to Enterprise orgs, Manufacturing, Energy & Utilities
Performanta is a cybersecurity services company with operations in the UK and South Africa, delivering managed detection and response, SOC services, and Microso...
ProArch Technologies
Best for: Mid-Market to Enterprise orgs, Manufacturing, Technology
ProArch provides managed cybersecurity services, cloud solutions, and data analytics to mid-market organizations, with a strong focus on Microsoft security tech...
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...
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...
Quzara
Best for: SMB to Enterprise orgs, Government & Public Sector, Defense & Aerospace
Quzara provides FedRAMP-authorized managed cybersecurity services to government agencies and contractors through its Cybertorch platform, specializing in cloud...
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...
Reliance Cyber
Best for: SMB to Enterprise orgs, Legal, Technology
Reliance Cyber is a UK-based managed cybersecurity provider delivering SOC services, MDR, and security consulting for mid-market and enterprise organizations ac...
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...
ScienceSoft
Best for: SMB to Enterprise orgs, Retail & E-Commerce, Manufacturing
ScienceSoft provides managed security services as part of its broader IT consulting and software development practice, offering security monitoring, vulnerabili...
SecuriCentrix
Best for: Mid-Market to Enterprise orgs, Technology
SecuriCentrix is an Irish managed security services provider delivering SOC operations and cybersecurity consulting to enterprises across Ireland and the UK.