MSSP Database · Updated 2026
MSSP List 2026: Complete US Managed
Security Service Providers List
The most complete managed security service providers list in the USA 15,000+ MSSPs, SOC providers, MDR companies, and cybersecurity firms, verified and updated continuously. Get a custom MSSP list filtered by state, city, service type, or company size delivered in Excel or CSV.
Includes: company name · location · phone · business email · employee count · security services (SOC / MDR / SIEM / GRC / Pen Testing)
Submit your request · We'll respond within 12 hours
Looking for a verified managed security service providers list? MSP Companies maintains the largest MSSP database in the United States. Whether you need a list of MSSP companies in USA for B2B outreach, an MSSP list PDF for offline review, or a full Excel export for CRM import we have the format you need, filtered to your exact specifications.
Our cybersecurity companies list covers every segment of the managed security market: pure-play MSSPs, SOC-as-a-Service providers, MDR (Managed Detection & Response) companies, SIEM-managed services, GRC consultancies, penetration testing firms, and managed cybersecurity service providers offering hybrid MSP/MSSP services. Every record is tagged by service type so you can pull exactly the subset you need.
Need to browse cybersecurity companies first? Visit our cybersecurity companies directory or the full managed IT services directory. When you're ready for the complete list of managed security service providers in downloadable format this is the page. Also see our MSP list if you need the broader managed IT services database.
Coverage
Security Services Covered in Our MSSP List
Every company in our managed security service providers database is tagged by the cybersecurity services they offer.
SOC (Security Operations Center)
24/7 threat monitoring, alert triage, and incident escalation from dedicated security operations centers.
MDR Managed Detection & Response
Active threat hunting, endpoint detection, and rapid response services delivered as a managed offering.
SIEM Management
Log aggregation, correlation rule management, and security analytics delivered by third-party MSSPs.
GRC & Compliance
Governance, Risk & Compliance services PCI DSS, HIPAA, SOC 2, ISO 27001, and CMMC frameworks.
Incident Response (IR)
Breach response, forensic investigation, and remediation services from specialized IR/MSSP firms.
Threat Intelligence
Curated threat feeds, dark web monitoring, and adversary intelligence delivered as a managed service.
Data Fields
What's Inside the MSSP List
Every record in our managed security service providers list PDF and Excel export includes these fields ready for CRM import, Excel filtering, or ABM campaign targeting.
| Field | Coverage in MSSP List |
|---|---|
| Company name & website | 100% |
| City, state, ZIP code | 100% |
| Phone number | Verified |
| Business email | Verified |
| Employee count | Firmographic |
| Estimated annual revenue | Firmographic |
| Security services (SOC / MDR / SIEM / GRC) | Tagged |
| Certifications (ISO 27001, SOC 2, PCI DSS) | Where available |
Live Data Preview
Sample List of MSSP Companies in USA
A preview of real records from our cybersecurity companies list. The full MSSP database contains 15,000+ companies across all 50 states.
| # | Company | City | State | Employees | Security Services | Type | |
|---|---|---|---|---|---|---|---|
| 1 | Arctic Wolf Networks | Eden Prairie | MN | 1000+ | SOC, MDR, SIEM | MSSP | In full list |
| 2 | Secureworks | Atlanta | GA | 1000+ | MDR, Threat Intel, SOC | MSSP | In full list |
| 3 | Trustwave | Chicago | IL | 1000+ | MDR, PCI, Pen Testing | MSSP | In full list |
| 4 | Netsurion | Fort Lauderdale | FL | 200–500 | SIEM, SOC, Compliance | MSSP | In full list |
| 5 | Optiv Security | Denver | CO | 1000+ | MDR, Cloud Security, GRC | MSSP | In full list |
| 6 | Herjavec Group | Toronto | ON | 500–1000 | SOC, MDR, Incident Response | MSSP | In full list |
| 7 | Coalfire | Westminster | CO | 500–1000 | Compliance, Pen Testing, GRC | MSSP | In full list |
| 8 | GuidePoint Security | Herndon | VA | 500–1000 | MDR, Threat Hunting, SIEM | MSSP | In full list |
| 9 | Cyderes | Kansas City | MO | 200–500 | MDR, SOC, Threat Intel | MSSP | In full list |
| 10 | Solutionary (NTT) | Omaha | NE | 500–1000 | SOC, SIEM, Threat Detection | MSSP | In full list |
| 11 | Kudelski Security | Phoenix | AZ | 200–500 | MDR, Threat Intel, IR | MSSP | In full list |
| 12 | Binary Defense | Stow | OH | 100–200 | MDR, SOC, Endpoint Security | MSSP | In full list |
| 13 | Nuspire | Commerce Twp | MI | 100–200 | MDR, SIEM, Firewall Mgmt | MSSP | In full list |
| 14 | CyberProof | New York | NY | 200–500 | MDR, SIEM, Threat Hunting | MSSP | In full list |
| 15 | Ciphertek | Houston | TX | 50–100 | SOC, Compliance, MDR | MSSP | In full list |
| 16 | BlueVoyant | New York | NY | 500–1000 | MDR, Supply Chain Risk | MSSP | In full list |
| 17 | Deepwatch | Tampa | FL | 200–500 | MDR, SOC as a Service | MSSP | In full list |
| 18 | Stratejm | Mississauga | ON | 50–100 | MDR, SIEM, Compliance | MSSP | In full list |
MSSP Contact Data
Need this data? Request a custom MSSP list for your target market
Filter by state · service type · company size · We'll respond in 12 hours
MSSP Data Options
How to Get MSSP Company Data
Choose what fits your needs from a quick data request to a full custom MSSP database by state, service type, or company size.
Quick Request
Get MSSP Sample Data
Submit your work email we'll send you a sample of verified MSSP company data within 12 hours. Tell us your target state, service type, or size and we'll tailor it.
State & City Lists
Custom State or Metro List
Get a targeted list of MSSP companies for any US state or city · Excel/CSV · Filter by SOC type, MDR, company size, or certifications.
Get State MSSP ListFull MSSP Database
All 15,000+ US MSSPs
Complete MSSP contact database with CISO, CTO & VP Security emails · Custom segments by service type, headcount, or revenue · Excel/CSV · CRM-ready.
Request Full Database QuoteUse Cases
Who Uses Our Managed Security Service Providers List
Our MSSP database is used by cybersecurity vendors, channel teams, PE firms, recruiters, and analysts who need a reliable, verified MSSP mailing list.
Cybersecurity vendors & ISVs
Selling EDR, XDR, SIEM, or threat intel platforms to MSSPs target verified decision-makers from the most complete MSSP database in the USA.
Channel & partner programs
Building MSSP partner pipelines with the full list of managed security service providers across all 50 US states and major metros.
Marketing & demand-gen agencies
Running ABM campaigns for cybersecurity clients with verified CEO, CISO & VP contacts from a clean MSSP mailing list.
Private equity & M&A advisors
Mapping the MSSP market for acquisition targets using firmographic data revenue, headcount, service mix, and geographic footprint.
Recruiters & HR firms
Sourcing cybersecurity talent and leadership from managed security companies filter by city, headcount, or specialization.
Analysts & market researchers
Building cybersecurity market maps from the complete list of MSSP companies segment by SOC type, compliance focus, or MDR capability.
Data Quality
How We Verify Every Record in the MSSP List
Our list of managed security service providers isn't scraped once and forgotten. Each company in the MSSP database passes through a verification cycle: website validation, phone and email checks, service classification (SOC / MDR / SIEM / GRC / IR), certification tagging, and firmographic enrichment. Records failing verification are flagged and re-checked before appearing in any list of MSSP companies in USAthat we deliver. The result is a clean, accurate MSSP mailing list with 98% deliverability.
Browse by City
MSSP Companies Near Me Browse by City
Need cybersecurity companies in a specific metro? Browse our city-level managed security service providers directory verified MSSP lists for every major US city.
FAQs
Managed Security Service Providers List FAQs
Common questions about our MSSP list, PDF download, and cybersecurity database options.
How many MSSPs are there in the USA?
What is the difference between an MSP and an MSSP?
Can I download the MSSP list as a PDF?
Does the MSSP list include SOC and MDR providers?
What cybersecurity certifications are included in the data?
How often is the MSSP database updated?
Can I get a custom MSSP list by state, service type, or company size?
Is this an MSSP email list?
Get MSSP Company Data
Request Verified MSSP Contact Data 15,000+ Managed Security Service Providers USA
Submit your request and we'll send you a tailored MSSP company listfiltered by state, SOC/MDR/SIEM service type, or company size. Delivered in Excel/CSV within 12 hours.
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