Who is NTT Security?
NTT Security is a cybersecurity services provider within the NTT group that delivers managed security, consulting, and threat intelligence offerings for enterprises and public sector organizations.
- Managed Security Services (MSS) for monitoring, detection, and response across on-premises (on-prem) and cloud environments
- Security consulting and advisory services for strategy, Governance, Risk, and Compliance (GRC)
- Threat intelligence, analytics, and incident response services integrated into client Security Operations (SecOps)
- Security architecture, integration, and implementation services for network, endpoint, and cloud security controls
- Global service delivery aligned with NTT group infrastructure, cloud, and connectivity services
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More About NTT Security
NTT Security operates as the specialized cybersecurity entity within NTT, providing managed and professional services that focus on protecting enterprise IT and operational environments. Its portfolio targets large organizations with distributed infrastructure, hybrid cloud deployments, and regulatory obligations, integrating SecOps with clients’ existing technology stacks and NTT group services. Engagements typically align with SecOps centers (SOC), network operations, and Enterprise Risk Management (ERM) functions.
The company’s MSS (managed security services) span continuous monitoring, threat detection, and incident response, using Security Information and Event Management (SIEM) platforms, log management, and security analytics tools. These services commonly integrate with Endpoint Detection And Response (EDR) (endpoint security), firewalls and intrusion prevention systems (network security), and identity and access management (identity security). NTT Security uses industry frameworks such as ISO 27001, NIST Cybersecurity Framework, and other risk-based approaches to structure service delivery and reporting for enterprise stakeholders.
Consulting and advisory services (security consulting) address security strategy, GRC, supporting clients in areas such as security assessments, architecture reviews, and program design. These engagements often map to enterprise frameworks like COBIT and Information Technology Infrastructure Library (ITIL) for process alignment, and to regulatory domains such as data protection, sector-specific compliance, and supply chain security. NTT Security works with clients to design security architectures across data center, Wide Area Network (WAN), internet edge, and cloud platforms, aligning technical controls with defined risk appetites and business requirements.
In threat intelligence and incident response (threat intelligence), NTT Security aggregates telemetry from customer environments and global sources to identify malicious activity, support threat hunting, and guide containment and remediation. Services can be integrated with clients’ existing SOC tooling or delivered as part of NTT-operated SOCs, providing playbooks, runbooks, and incident reporting designed for security and executive stakeholders. This positioning aligns the company with categories such as Managed Detection and Response (MDR) and Extended detection and response (XDR) when tightly coupled with endpoint, network, and cloud telemetry.
Within a directory or marketplace taxonomy, NTT Security fits into MSS, security consulting and advisory, threat intelligence and incident response, and security architecture and integration services. It is also relevant where organizations seek providers that connect SecOps with network services, cloud infrastructure, and managed IT operations under the broader NTT group umbrella, providing security capabilities that span connectivity, data center, and multi-cloud environments.
Our description of NTT Security. Updated December 2025.
