Endpoint Security Directory: Purpose and Scope

The Endpoint Security Authority directory indexes service providers, technology vendors, managed security service providers (MSSPs), and consulting firms operating within the endpoint security sector across the United States. This reference describes the directory's geographic boundaries, classification criteria, inclusion standards, and maintenance procedures. The scope spans commercial, federal, and critical infrastructure endpoint security contexts — from traditional workstation protection to mobile device management, cloud workload security, and operational technology environments.

Geographic Coverage

The directory covers endpoint security providers operating under United States jurisdiction, including firms headquartered domestically and international vendors that maintain licensed operations, regulatory registrations, or active service delivery within US borders. Coverage includes all 50 states, the District of Columbia, and US territories where federal cybersecurity law applies.

Federal regulatory frameworks shape the eligibility boundaries. Providers serving federal agencies operate under the Federal Information Security Modernization Act (FISMA), codified at 44 U.S.C. § 3551 et seq., which imposes baseline security requirements on all federal information systems and their supporting contractors. Defense contractors additionally fall under the Cybersecurity Maturity Model Certification (CMMC) program, administered by the Department of Defense. Providers serving healthcare organizations are subject to the HIPAA Security Rule, enforced by the Department of Health and Human Services Office for Civil Rights.

The directory does not impose geographic restrictions based on provider headquarters. A firm based in Texas that delivers managed endpoint detection and response (EDR) services to clients in Massachusetts, Washington state, and federal agencies in Virginia qualifies for inclusion under national scope criteria. Providers with operations limited exclusively to non-US jurisdictions fall outside directory scope.

State-level cybersecurity licensing and registration requirements — such as those enforced by New York's Department of Financial Services under 23 NYCRR 500 — are noted as relevant qualifications but are not independently sufficient to determine inclusion. The primary eligibility criteria are described in the Standards for Inclusion section below.

How to Use This Resource

The directory functions as a structured reference for procurement professionals, IT and security managers, government contracting officers, and researchers mapping the endpoint security vendor landscape. The endpoint security listings provide filterable records organized by service category, compliance specialization, and delivery model.

Listings are organized across three primary service categories:

1. Endpoint Detection and Response (EDR) and Extended Detection and Response (XDR) Vendors — Platform providers delivering agent-based telemetry, behavioral analytics, and automated response capabilities for workstations, servers, and mobile devices.
2. Managed Security Service Providers (MSSPs) and Managed Detection and Response (MDR) Firms — Organizations providing outsourced endpoint monitoring, threat hunting, and incident response under defined service-level agreements.
3. Consulting, Assessment, and Implementation Firms — Professional services organizations that conduct endpoint security assessments, architecture design, compliance gap analysis, and deployment support without operating a managed service platform.

These categories are not mutually exclusive. A firm that develops and sells an EDR platform while also providing managed services appears in both the vendor and MSSP/MDR categories. Classification is based on primary revenue model and service delivery structure, not marketing taxonomy.

For researchers and analysts seeking definitional and regulatory context on endpoint protection frameworks, the How to Use This Endpoint Security Resource page describes how reference content and directory records interact across the site.

Standards for Inclusion

Inclusion in the directory requires that a listed organization demonstrably deliver endpoint security services within US jurisdiction and meet a defined minimum threshold of operational legitimacy. The following criteria apply:

1. Active service delivery — The provider must offer endpoint security products or services to US-based clients as a primary or significant secondary business function. Firms that list endpoint security as a marginal capability embedded in a broader unrelated offering do not qualify.
2. Identifiable legal presence — The organization must maintain a registered legal entity — corporation, LLC, partnership, or equivalent — under US law, or operate a registered foreign entity authorized to conduct business in at least one US state.
3. Verifiable public profile — The organization must maintain publicly accessible documentation of its services, including product or service descriptions, and must be identifiable through at least one authoritative third-party source such as a state business registry, GSA System for Award Management (SAM.gov), or an industry analyst report.
4. Relevant compliance alignment — Where the provider claims specialization in regulated sectors, the listing must be supportable by public evidence of applicable certifications or authorizations. Examples include FedRAMP Authorization for cloud-delivered services, StateRAMP recognition, SOC 2 Type II attestation, or CMMC Third-Party Assessment Organization (C3PAO) accreditation issued by the Cyber AB.

Providers marketing exclusively to consumers without enterprise, government, or organizational clients fall outside the intended scope of this directory. Consumer antivirus and personal device management products serve a distinct market not covered by this reference.

How the Directory Is Maintained

Directory records are reviewed against publicly verifiable sources. No listing is published on the basis of self-reported claims alone. Verification draws on primary sources including SAM.gov federal contractor registrations, state business entity registries, the Cyber AB marketplace for CMMC-related qualifications, and FedRAMP's publicly available authorization list maintained at fedramp.gov.

Listings that no longer meet inclusion criteria — due to business closure, acquisition, regulatory sanction, or material change in service scope — are subject to suspension or removal. Organizations identified as operating under formal enforcement actions by the Federal Trade Commission, a state attorney general, or a sector-specific regulator such as HHS or the SEC are flagged for review before any listing status is confirmed or retained.

The directory does not accept paid placement in exchange for inclusion, nor does it rank providers by commercial relationship. Ordering within categories reflects classification structure, not endorsement or preference. For questions about a specific listing record, the contact page routes to the appropriate administrative review process.