Company lists · Data refreshed October 2026

Top 11 IT security software companies based in Japan

RevenueBase identified 27 company matches for IT security software companies associated with Japan as of October 2026 and tracks 2,564 professional contacts across them, including 806 with verified work emails. Jing is the largest hub.

This list covers company matches for IT security software companies 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
27Companies
2,564Contacts tracked
806Verified emails
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The 11 largest IT security software companies based in Japan

Ranked by team size
Top 11 of 27 company matches for IT security software companies 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 matchTokyo, JapanHQ recorded Oct 19, 202651-20083 contacts →

Exact match

“With a vision to secure the vehicles of tomorrow, VicOne delivers a broad portfolio of cybersecurity software and services for the automotive industry.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
3Exact match大阪市 淀川区, JapanHQ recorded Oct 19, 202651-20028 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 match1-2-8 Toranomon, JapanHQ recorded Oct 19, 20261,001-5,00020 contacts →

Exact match

“E-guardian is a "Comprehensive Internet Security Company" that provide a one-stop solution to all your internet security needs through: Post Monitoring, Customer Support…”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
7Exact match大田区, JapanHQ recorded Oct 19, 2026201-50017 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
8Exact matchTokyo, JapanHQ recorded Oct 19, 202651-20012 contacts →

Exact match

“Since its founding in in Tokyo, Japan, Humming Heads has put a great amount of efforts in developing cyber security software solutions.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
9Exact 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
10Exact match港区, JapanHQ recorded Oct 19, 202651-2006 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
11Exact matchJapanHQ recorded Oct 19, 202611-504 contacts →

Exact match

“Semita is proud to announce it has been selected as the 2022 Cybersecurity company of the the year by APAC CIO Outlook!”

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

Showing 11 of 27 IT security software companies based in Japan

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IT security software companies based in Japan at a glance

As of Oct 19, 2026
31.4%Verified-email coverage
95.0Average contacts per company
51-200Median size (employees)
25.9%Largest-city concentration · Jing
Oct 19, 2026Page data refreshed

Companies by employee count

1-10
7
11-50
4
51-200
10
201-500
2
1,001-5,000
3
5,001-10,000
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 27 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 “IT security software companies” 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 806 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 “IT security software companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many IT security software companies are there based in Japan?

RevenueBase identified 27 company matches for IT security software companies 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 IT security software companies?

Jing leads with 7 company records, followed by Tokyo (3) and Minato-Ku (1).

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 806 professional contacts with verified work emails tracked across these 27 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.