Top 10 MSSP Providers in USA 2025 - 26

The ten MSSP providers covered in this guide are selected for their ability to deliver mature, 24×7 security operations for US organizations in 2025 - 26, combining advanced threat detection, incident response, and compliance support. This guide compares their scale, services, certifications, and ideal customer fit so you can shortlist partners that provide continuous monitoring and measurable risk reduction without the cost and complexity of building and running your own in-house SOC, whether you are a mid-market firm or a large enterprise. 

In 2025, there are an estimated 40,000 - 45,000 managed security service providers in the USA, and this overall number is expected to remain in a similar range through 2026.  

1. Secureworks

Long-standing MDR/MSSP provider with the Taegis platform and global 24/7 SOCs, recognized as a leader in MDR and XDR by multiple analyst reports.  

• Year of Establishment: Founded in 1998  
• Location: Headquartered in Atlanta, Georgia, USA.  
• Number of Employees: Around 1,500 employees as of 2024.  
• Services Provided: Taegis MDR/XDR, 24×7 managed SOC, incident response, and threat intelligence.  
• Clients: Fortune: Serves thousands of customers worldwide, including a significant share of Fortune 500 enterprises.  
• Certifications: SOC 2 Type II and ISO/IEC 27001, plus analysts with advanced individual security certifications.  
• Pros & Cons: Strong mature MDR/XDR platform and threat intel; less suited to very small, low-budget organizations.  
• Recommended for: Mid-market and enterprise organizations needing 24×7 managed SOC with deep analytics and compliance support.  
• Price Range: Quote-based, typically mid-to-high enterprise pricing aligned with five-figure monthly or six-figure annual security budgets. 

2. IBM Security – Managed Security Services

Provides around-the-clock managed security services, X-Force Command Centers (SOCs), and MDR capabilities for large enterprises and regulated sectors.  

• Year of Establishment: Established in 1911  
• Location: Headquartered in Armonk, New York, USA.
• Number of Employees: IBM employs ~270,300 people globally as of 2024, including several thousand dedicated cybersecurity and MSS professionals.  
• Services Provided: 24×7 Managed Security Services (MSS) including threat management, MDR, cloud and endpoint security, identity, and SOC operations backed by IBM X-Force Threat Management.  
• Clients: Fortune: IBM Security states it protects 95% of the Global Fortune 500 and 100% of the US Fortune 100 across sectors like finance, healthcare, and telecom.  
• Certifications: Leverages IBM environments and services that maintain ISO/IEC 27001 and SOC 2 compliance for relevant cloud and managed security offerings.  
• Pros & Cons: Very strong global scale, deep X-Force threat intelligence and broad tooling ecosystem; can be complex and premium-priced for smaller organizations that want a lighter, MDR-only service.  
• Recommended for: Large mid-market and enterprise organizations running hybrid or multicloud environments that need a global MSSP with integrated SOC, MDR, compliance, and threat-intel capabilities.  
• Price Range: Quote-based, enterprise-level pricing, typically structured as multi-year managed security contracts aligned with six-figure (annual) security budgets. (Inference from MSS positioning and analyst coverage.) 

3. LevelBlue (formerly AT&T Cybersecurity)

A major US-headquartered MSSP with multiple global SOCs, delivering managed threat detection, response, and broader managed security offerings.  

• Year of Establishment: Formed as LevelBlue in 2024 as a joint venture spin-off from AT&T Cybersecurity and WillJam Ventures.  
• Location: Headquartered in the Dallas–Plano, Texas area, USA.  
• Number of Employees: Roughly 400–1,000 employees reported across different 2024–2025  
• Services Provided: Managed security services, MDR/XDR (USM / MTDR), network and endpoint security, incident response, consulting, and threat intelligence via LevelBlue Labs.  
• Clients: Fortune: States it serves 25,000+ customers globally, including more than half of the Fortune 100.  
• Certifications: References support for HIPAA, PCI DSS, ISO 27001, and SOC 2 requirements in its managed security services portfolio.  
• Pros & Cons: Strong pure-play MSSP focus with 7+ global SOCs/NOCs and OTX threat intel heritage; relatively new brand (post-2024 spin-out) which may require extra due diligence on long-term roadmap and integration for conservative buyers.  
• Recommended for: Mid-market and large enterprises needing a dedicated MSSP with 24×7 SOC, MDR, and compliance-backed managed security around networks, endpoints, and cloud.  
• Price Range: Quote-based managed security and MDR pricing, typically aligned to multi-year MSSP contracts rather than low-budget SMB tiers. 

4. Eventus Security

Managed Security Service Provider (MSSP) with a strong focus on SOC as a Service, ransomware incident response, penetration testing, and continuous monitoring; particularly positioned around AI-driven SOC operations and compliance-ready services for mid-market and enterprise customers (based on your own service description and positioning). 

• Year of Establishment: Incorporated in 2015 and operating as a managed security services provider (MSSP) since 2017.  
• Location (USA): Eventus Security Inc, 30 Broad Street, 14th Floor #14108, New York City, NY 10004, USA.  
• Number of Employees: Over 200 professionals as of 2024, including more than 150 certified cybersecurity experts.  
• Services Provided: AI-driven Managed SOC, SOC as a Service, MXDR, cyber resilience, red teaming, application security, cloud security, threat intelligence, and incident response.  
• Clients: Fortune: Serves 125+ enterprise and mid-market clients across India, Southeast Asia, the Middle East, and North America; specific Fortune 500 penetration is not publicly disclosed.  
• Certifications: CERT-In empaneled for cybersecurity services, with ISO security certificates showcased on the site and recent recognition as a “Top InfoSec Innovator 2025 – SOC-as-a-Service (Editor’s Choice).”  
• Pros: Strong AI-driven SOC and MXDR focus with rapid growth and global reach; smaller than legacy US hyperscalers, which may matter for buyers who require very large, US-headquartered incumbents.  
• Recommended for: Mid-market and upper mid-market organizations in the USA that want a cost-efficient, high-touch MSSP delivering 24×7 managed SOC, incident response, and cyber resilience without building their own full in-house SOC.  
• Price Range: Custom-quoted MSSP/SOCaaS pricing typically aligned to mid-market budgets, varying by environment size (log sources, endpoints, locations) and required SLAs rather than fixed per-seat public pricing. 

5. Arctic Wolf

SOC-as-a-Service specialist that delivers 24×7 monitoring, threat detection and incident response via its cloud-native platform and concierge security team.  

• Year of Establishment: Founded in 2012  
• Location: Global headquarters at 8939 Columbine Rd, Eden Prairie, Minnesota, USA.  
• Number of Employees: Around 3,000 employees globally as of 2025, with a workforce reported at 2,600+ in 2024 and over 3,100 by 2025.  
• Services Provided: AI-driven Managed Detection and Response, SOC-as-a-Service, Managed Risk, Cloud Detection and Response, Managed Security Awareness, and Incident Response built on the Aurora Platform.  
• Clients: Fortune: Protects 10,000+ customers across 30+ countries, spanning SMBs to large enterprises, with public references including brands like BWT Alpine F1 Team, Menzies LLP, and First United Bank & Trust.  
• Certifications: Holds SOC 2 Type II and ISO/IEC 27001 certifications for its information security management and service controls.  
• Pros & Cons: Strong MDR/SOC-as-a-Service focus with 24×7 Concierge Security Team and high customer satisfaction ratings; less suited to very small, low-budget organizations that need simple, tool-only monitoring.  
• Recommended for: Mid-market and enterprise organizations that want an outsourced SOC with open-XDR visibility across endpoint, network, identity, and cloud, plus ongoing risk management and security awareness.  
• Price Range: Quote-based MDR/SOCaaS pricing typically aligned to multi-year contracts and mid-to-high security budgets rather than entry-level SMB pricing. (Inference from MDR positioning, analyst coverage, and channel materials.) 

6. Rapid7 MDR

MDR and managed SOC built around the Insight platform and next-gen SIEM/XDR, offering 24×7 threat monitoring, investigation and response.  

• Year of Establishment: Founded in 2000  
• Location: Global headquarters at 120 Causeway Street, Boston, Massachusetts 02114, USA.  
• Number of Employees: 2,413 employees as of 31 December 2024, according to latest filings.  
• Services Provided: 24×7 Managed Detection and Response (MDR) with SOC analysts, Managed XDR on the Insight platform, threat hunting, incident response guidance, and compliance-focused monitoring.  
• Clients: Fortune: Serves thousands of customers across SMB, mid-market, and enterprise, using MDR as a full or partial alternative to an in-house SOC; specific Fortune 500 penetration is not publicly broken out.  
• Certifications: Operates an ISO/IEC 27001–certified ISMS and undergoes annual SOC 2 Type II audits for the Insight platform.  
• Pros & Cons: Strong integration with the Rapid7 Insight ecosystem and SOC 2 / ISO-backed controls; less attractive if you want a tool-agnostic MDR that is not centered on a specific vendor platform.  
• Recommended for: Security teams in mid-market and enterprise organizations that want to consolidate detection and response on a single XDR/MDR stack instead of building or expanding an internal SOC.  
• Price Range: Quote-based MDR/XDR service with no public list pricing, generally positioned as a full managed SOC alternative for organizations with dedicated security budgets rather than very small SMBs. 

7. CrowdStrike Falcon Complete

Fully managed MDR/SOC service on top of the Falcon platform, providing 24×7 expert-led monitoring, threat hunting, and end-to-end remediation across endpoints, cloud, and identities.  

• Year of Establishment: CrowdStrike was founded in 2011  
• Location: Global headquarters at 150 Mathilda Place, Suite 300, Sunnyvale, California 94086, USA.  
• Number of Employees: More than 8,000 employees globally as of 2025, according to recent company disclosures.  
• Services Provided: Falcon Complete delivers 24×7 managed detection and response on top of the Falcon platform, including endpoint, identity, cloud workload protection, threat hunting, and hands-on remediation.  
• Clients: Fortune: CrowdStrike serves thousands of customers worldwide, including a large share of Fortune 100 and Global 2000 companies, with strong penetration in regulated sectors.  
• Certifications: Falcon platform and cloud operations support SOC 2 Type II and ISO/IEC 27001 requirements, alongside multiple regional compliance attestations.  
• Pros & Cons: Very strong for endpoint- and identity-centric MDR with fast, hands-on response; less suitable if you want a vendor-neutral SOC not anchored to a single EDR/XDR stack.  
• Recommended for: Mid-market and enterprise organizations that want to outsource endpoint-focused SOC operations to the same vendor that supplies their EDR/XDR technology.  
• Price Range: Quote-based Falcon Complete subscriptions typically priced at mid-to-high enterprise levels, depending on endpoint count, modules enabled, and service SLAs. 

8. ReliaQuest (GreyMatter)

US-based provider delivering “beyond MDR” operations via its GreyMatter platform, unifying detection, investigation, response, and AI-driven automation across customer stacks.  

• Year of Establishment: Founded in 2007  
• Location: Global corporate headquarters at 1001 Water St, Suite 1900, Tampa, Florida 33602, USA.  
• Number of Employees: Approximately 800–1,200 employees globally as of 2025, based on recent headcount datasets and company profiles.  
• Services Provided: Agentic-AI security operations via the GreyMatter platform (open XDR), MDR, threat detection/investigation/response, attack surface and exposure management, dark web and digital risk protection, and automation/SOAR-style workflows.  
• Clients: Fortune / Enterprise: Serves 1,000+ enterprise customers worldwide, including major banks, airlines, hospitals, and the Boston Celtics, with six global operating centers focused on large enterprise security operations.  
• Certifications: Maintains annual SOC 2 Type II attestation and ISO/IEC 27001:2013 certification for its information security controls and GreyMatter platform.  
• Pros & Cons: Strong fit for large enterprises needing an AI-driven, tool-agnostic open XDR platform that unifies multiple SIEM/EDR tools; can be complex and likely over-sized for very small organizations that do not operate multi-tool, multi-cloud environments.  
• Recommended for: Large mid-market and enterprise organizations running hybrid or multi-SIEM, multi-cloud stacks that want a central security operations platform plus MDR rather than a single-vendor EDR-centric service.  
• Price Range: Quote-based enterprise pricing, typically aligned with six-figure annual security operations budgets and multi-year platform + MDR engagements (inferred from its >$3.4B valuation, 1,000+ enterprise clients, and AI SOC positioning). 

9. eSentire

MDR and Managed security service provider with 24×7 SOCs, threat hunting and managed vulnerability services, focused on stopping threats before they disrupt business.  

• Year of Establishment: Founded in 2001  
• Location: Global headquarters at 451 Phillip St, Suite 135, Waterloo, Ontario N2L 3X2, Canada, with SOC coverage across North America, EMEA, and APAC.  
• Number of Employees: Approximately 600 employees globally as of 2025.  
• Services Provided: Multi-signal MDR (open XDR), 24/7 threat hunting and response, exposure management, and on-demand incident response.  
• Clients: Fortune: Protects 2,000+ organizations in 70–80+ countries across 35+ industries; specific Fortune 500 share is not publicly disclosed.  
• Certifications: PCI DSS certified and holds ISO/IEC 27001 and SOC 2 Type II certifications for its SOC and information security controls.  
• Pros & Cons: Strong “authority in MDR” positioning with multi-signal coverage and 24/7 Elite Threat Hunters; generally priced and designed for organizations that want a full managed operations partner rather than low-cost tooling only.  
• Recommended for: Mid-market and enterprise organizations looking to outsource MDR and day-to-day SOC operations while keeping a lean internal security team.  
• Price Range: Quote-based MDR with minimum project sizes around US$5,000 and typical service rates in the US$150–199 per hour range. 

10. Red Canary

US-based MDR and managed SOC provider specialising in endpoint, cloud, and identity threat detection, included in recent “best SOC/MDR provider” round-ups.  

• Year of Establishment: Founded in 2013  
• Location: Headquartered at 1601 19th Street, Denver, Colorado 80202, USA.  
• Number of Employees: 400+ employees as of 2024–2025  
• Services Provided: 24×7 MDR across endpoints, identities, cloud, network and SaaS, with detection-as-code engineering, proactive threat hunting, incident response support, and integrations with tools like Microsoft, Palo Alto, AWS and Google.  
• Clients: Fortune / Scale: Serves 4,000+ security teams globally, from mid-market to large enterprises across multiple industries; specific Fortune 500 share is not publicly broken out.  
• Certifications: SOC 2 Type II–attested and ISO/IEC 27001:2013–certified, with controls mapped to frameworks such as PCI DSS, HIPAA, NIST 800-171 and others.  
• Pros & Cons: Strong MDR-only focus with high true-positive detection, deep threat intel and broad, vendor-neutral integrations; less suited if you want a single provider to also run classic MSSP functions like firewall management or low-cost, tool-only monitoring.  
• Recommended for: Mid-market and enterprise security teams that want to augment or replace a SOC with 24×7 MDR across endpoint, identity and cloud while keeping their existing EDR/XDR stack in place.  
• Price Range: Third-party pricing analyses report starting from roughly US$120 per endpoint or US$100 per user account, with total cost varying by number of endpoints, identities and cloud resources under MDR.

To choose the best IT managed security services provider for your organization, you need clear selection criteria rather than trusting branding or tool names alone. Focus on how well the provider fits your risk profile, technology stack, and regulatory obligations in the US. 

The following points are related to how to choose the best IT managed security services provider for your organization. 

• Define your requirements first: data sensitivity, critical systems, in-house security skills, compliance obligations, and acceptable response times, so you know exactly what you expect from a provider. 
• Assess core capabilities: 24×7 monitoring, threat hunting, incident response, vulnerability management, and support for on-prem, cloud, and hybrid environments—not just basic alerting. 
• Prioritise soc service providers in USA that have proven experience with US-based organisations of similar size and industry, and verify they offer US-aligned SLAs, local regulatory expertise, and documented incident response processes. 
• Check technology and integration: confirm that their platform integrates cleanly with your SIEM, EDR, firewalls, identity systems, and ticketing tools, and that they can ingest and correlate logs from all critical assets. 
• Demand measurable SLAs: clearly defined mean time to detect (MTTD), mean time to respond (MTTR), escalation paths, and communication channels during incidents, with reporting your leadership can actually use. 
• Evaluate compliance and assurance: look for SOC 2/ISO 27001 certifications, audited processes, and the ability to produce audit-ready evidence for frameworks such as HIPAA, PCI DSS, SOX, and state privacy laws. 
• Compare pricing on total cost of ownership: understand onboarding fees, per-user or per-asset pricing, overage charges, and contract lock-ins so you can compare providers on value, not just headline price. 
• Validate reputation and fit: review case studies, reference calls, and customer satisfaction scores, and ensure the provider’s culture and communication style align with your internal teams for a long-term partnership. 

Eventus Security also delivers managed security service in India, helping organizations strengthen 24/7 threat detection and response capabilities. Explore our guide to Top mssp companies in India to review leading providers and identify the best long-term security partner for your business.