Global managed security services provider operating as part of NTT Group.
NTT Ltd. is a leading global technology services company that helps clients transform for long-term success through business and technology consulting, data and artificial intelligence, and industry solutions. With a presence in over 50 countries, NTT Ltd. operates a robust ecosystem of services including data centers, applications, infrastructure, and connectivity, enabling businesses to scale digitally anywhere and anytime.
Our take on NTT Security
NTT Security operates as the security division of NTT Group, one of the world's largest telecommunications and technology services companies. With operations across the United States and globally, NTT provides managed security services backed by significant infrastructure and financial resources. The company serves large enterprises and telecommunications providers requiring global security operations support.
NTT's managed security services encompass 24/7 threat detection through global SOCs, enterprise security monitoring, security device management, and vulnerability management. Their capabilities include incident response, security consulting, and proactive threat hunting. NTT's global network of security operation centers provides follow-the-sun coverage. The company's telecommunications heritage provides unique insights into network-layer threats and communication security.
The company differentiates through NTT Group's global reach and telecommunications integration. For multinational organizations requiring consistent security services across regions, NTT can deliver through their worldwide presence. Their experience securing telecommunications infrastructure provides relevant expertise for service providers and critical infrastructure operators. However, NTT Security has lower brand visibility than specialized security vendors in North American markets.
For global enterprises and telecommunications companies requiring worldwide managed security services from a financially stable provider, NTT delivers comprehensive capabilities. Their telecommunications background suits organizations with significant network infrastructure. Best fit for multinational corporations with complex global operations, telecommunications providers, and enterprises preferring to consolidate security services with IT infrastructure and network providers.
Verified credentials and recognition earned by NTT Security
Verified
This agency has a verified website presence.
LinkedIn Verified
This agency has a verified LinkedIn company page.
Top Rated
This agency has an exceptional AgencyCluster score of 80+.
10+ Years
Established in 2016. Over 10 years of experience.
Enterprise
Enterprise (500+)
Rankings earned on AgencyCluster
Common questions about NTT Security.
NTT Security has earned rankings on 3 AgencyCluster lists: Top 10 Cybersecurity Services in New York, Top 25 Cybersecurity Services in California, Top 50 Cybersecurity Services. Their highest AgencyCluster Score is 80/100. Rankings are merit-based and determined by evidence across six evaluation pillars — agencies cannot pay for higher positions.
In our evaluation for Cybersecurity Services, NTT Security scores 80/100 overall. Their strongest areas are Credibility, Proof of Work & Outcomes, Reputation, Category Fit, Delivery Maturity, Freshness. A high Outcomes score means they have verifiable case studies with measurable results — the most heavily weighted factor in our methodology.
NTT Security was founded in 2016, giving them over a decade of experience in cybersecurity services. In an industry where many agencies are less than 5 years old, 10+ years of sustained operations signals stability, client retention, and the ability to adapt through multiple technology cycles. Today, the team is enterprise.
NTT Security has a presence across 5 states: California, Nebraska, New York, Texas, Virginia. A multi-state presence can be important for enterprise buyers who need local account management, on-site workshops, or time-zone-aligned teams. It also suggests the agency has scaled beyond a single-office operation.
Penetration testing engagements cost $10K–$60K depending on scope. Security assessments and compliance readiness range from $20K–$100K. Managed security retainers (continuous monitoring, incident response) run $5K–$30K/month. These are industry benchmarks for cybersecurity services agencies at the level AgencyCluster curates. Actual pricing for NTT Security will depend on project scope, timeline, and complexity — contact the agency directly for a custom quote.
Yes. NTT Security has been vetted and verified by AgencyCluster's editorial team through a rigorous, multi-factor review process. Unlike self-serve directories, AgencyCluster does not accept automated submissions — every agency is evaluated manually before being published. Our vetting covers identity verification (website, LinkedIn, domain age), business legitimacy (years of operation, team size, registered presence), evidence of work (case studies, portfolio, client outcomes), reputation checks across third-party platforms, activeness and freshness of their online presence, and screening for red flags including misconduct, fraud, or misleading claims. Agencies that fail any critical check are not listed. For NTT Security, verified signals include a functioning website, LinkedIn company profile, 10+ years of operating history (founded 2016), 3 earned rankings on curated top lists.
