Company lists · Data refreshed October 2026

Top 18 Co-managed security monitoring services providers based in Japan

RevenueBase identified 61 company matches for co-managed security monitoring services providers associated with Japan as of October 2026 and tracks 8,511 professional contacts across them, including 907 with verified work emails. Jing is the largest hub.

This list covers company matches for co-managed security monitoring services providers associated with Japan, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed October 19, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list RevenueBase SmartSearch · Exact Recorded Oct 19, 2026 How this list was built
61Companies
8,511Contacts tracked
907Verified emails
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The 18 largest co-managed security monitoring services providers based in Japan

Ranked by team size
Top 18 of 61 company matches for co-managed security monitoring services providers based in Japan, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 19, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchYoyogi, JapanHQ recorded Oct 19, 20265,001-10,0002,132 contacts →

Exact match

“We’re a global cybersecurity leader, helping to make the world safe for exchanging digital information.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
2Exact match千代田区, JapanHQ recorded Oct 19, 2026501-1,000240 contacts →

Exact match

“NRIITNRI NRI SecureTechnologies is a global service provider of next-generation Managed Security Services, cutting-edge Blockchain Security Solutions, and Consulting Services with…”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
3Exact match渋谷区, JapanHQ recorded Oct 19, 202651-20062 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
4Exact match新宿区, JapanHQ recorded Oct 19, 202651-20025 contacts →

Exact match

“1.()\t2.\t3.()”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
5Exact match港区, JapanHQ recorded Oct 19, 202611-5024 contacts →

Exact match

“Proofpoint, Inc.NASDAQ:PFPT Proofpoint Fortune”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
6Exact matchChuo-ku, JapanHQ recorded Oct 19, 202611-5019 contacts →

Exact match

“Pipeline Co.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
7Exact matchTokyo, JapanHQ recorded Oct 19, 2026201-50018 contacts →

Exact match

“Protecting the Digital Future with Advanced Threat Detection At NTT Security (Japan) K.K, we specialize in cutting-edge cyber threat detection and response, helping businesses…”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
8Exact match港区, JapanHQ recorded Oct 19, 202651-20018 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
9Exact matchChiyoda-ku, JapanHQ recorded Oct 19, 2026501-1,00013 contacts →

Exact match

“For over 20 years, NTT has provided proactive cyber defense and services that make use of gathered human resources and intelligence to protect our clients, our society and the…”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
10Exact match港区, JapanHQ recorded Oct 19, 202611-509 contacts →

Exact match

“ESET ESET “ (Progress)”ESET“ (Protect)” ESET – Progress.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
11Exact match中央区, JapanHQ recorded Oct 19, 202611-508 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
12Exact matchTokyo, JapanHQ recorded Oct 19, 202651-2007 contacts →

Exact match

“VarioSecure offers its services to any enterprise using the Internet.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
13Exact match仙台市 青葉区, JapanHQ recorded Oct 19, 202611-505 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
14Exact match千代田区, JapanHQ recorded Oct 19, 202611-502 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
15Exact match港区, JapanHQ recorded Oct 19, 202611-502 contacts →

Exact match

“IPO https://machinarecord.com/recruit/”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
16Exact match新宿区, JapanHQ recorded Oct 19, 2026201-5002 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
17Exact matchMinato, JapanHQ recorded Oct 19, 202611-502 contacts →

Exact match

“vCISO Group is a global network of CISOs (Chief Information Security Officers) who offer "CISO as a service" cybersecurity consulting- Cybersecurity Strategy - Technology Risk…”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
18Exact matchJapanHQ recorded Oct 19, 202611-502 contacts →

Exact match

“Founded in 2018, Cybersecurity Elastic Laboratory (CEL) stands at the forefront of safeguarding society against the ever-growing threat of cyber attacks.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase

Showing 18 of 61 co-managed security monitoring services providers based in Japan

See the full list, filter by size, metro and specialty, and access 907 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Co-managed security monitoring services providers based in Japan at a glance

As of Oct 19, 2026
10.7%Verified-email coverage
139.5Average contacts per company
11-50Median size (employees)
23.0%Largest-city concentration · Jing
Oct 19, 2026Page data refreshed

Companies by employee count

1-10
13
11-50
20
51-200
19
201-500
2
501-1,000
3
1,001-5,000
1
5,001-10,000
2
10001+
1

Email recency for this list is measured worldwide rather than for Japan, so it is reported there. Company counts and contact totals on this page are exact for Japan, over 61 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records associated with Japan whose business descriptions match “co-managed security monitoring services providers” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
Ranking
Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification
Every displayed company carries at least one verified work email. RevenueBase tracks 907 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh
This page's figures were pulled from the company graph on October 19, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “co-managed security monitoring services providers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many co-managed security monitoring services providers are there based in Japan?

RevenueBase identified 61 company matches for co-managed security monitoring services providers associated with Japan as of October 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Trend Micro tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most co-managed security monitoring services providers?

Jing leads with 14 company records, followed by Tokyo (10) and Minato (2).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 907 professional contacts with verified work emails tracked across these 61 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on October 19, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.