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Ntt Security Japan K.K

NTT Security (Japan) K.K specializes in cyber threat detection and response for businesses.

Computer and Network Security
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Headquarters
Tokyo, JapanSource: RevenueBaseRetrieved October 13, 2026
Employee range
201 to 500Source: RevenueBaseRetrieved October 13, 2026
Published list appearances
192 supported appearances ↗Source: RevenueBase lists
The company at a glance

What does Ntt Security Japan K.K do?

The company is part of NTT Group’s global cybersecurity ecosystem and serves organizations in Japan and beyond. Its proactive defense strategies are backed by NTT’s global network infrastructure and cybersecurity research.

Based on the company’s public LinkedIn information, supplied through RevenueBase.

Who it serves

The company’s services are directed to enterprises.

What the business offers

Services & capabilities.

Managed detection and response

The company offers managed detection and response services.

Source: LinkedIn company description · Retrieved October 13, 2026

Security consulting and threat intelligence

The company offers security consulting and threat intelligence.

Source: LinkedIn company description · Retrieved October 13, 2026

Explore the business in context

Company lists.

Supported appearances on published RevenueBase lists, including available memberships beyond displayed rankings.

Positions describe ordering within each source list. See how lists are built ↗

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BADGE PREVIEWNtt Security Japan K.K listed #2 on Cyber risk assessment companies, September 18, 2026Open the published source list.
Ntt Security Japan K.K

#2 Cyber risk assessment companies

Snapshot: September 18, 2026

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Company information

Sources & data notes.

RevenueBase prepared this profile from the company’s public LinkedIn information and RevenueBase company data. These source records were retrieved on October 13, 2026. AI helped summarize these sources, with a separate automated check against the source text completed on November 4, 2026. Directory positions use company-contact counts from separate saved list snapshots dated September 13, 2026, September 18, 2026, September 20, 2026, September 21, 2026, September 26, 2026, September 27, 2026, September 28, 2026, September 30, 2026 and October 10, 2026. How the company lists are built.

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