14 providers · Japan
Cybersecurity Services Providers in Japan
The cybersecurity services market in Japan serves the country's banking and insurance and automotive sectors as well as the broader enterprise IT estate concentrated in Tokyo. Cybersecurity service providers deliver managed detection and response, security operations centre services, penetration testing, red team exercises, incident response retainers and compliance advisory. The category spans both pure-play managed security service providers and consulting firms with embedded cyber practices. TechVendorIndex tracks 14 providers actively delivering cybersecurity services engagements in Japan, drawn from global systems integrators, regional champions and specialist boutiques.
About cybersecurity services in Japan
Soc, penetration testing, incident response and compliance. Buyers in Japan typically engage providers in this category to support transformation work tied to banking and insurance and automotive priorities, with delivery shaped by local obligations under the APPI, the FISC Security Guidelines, the METI Cybersecurity Management Guidelines and the JFSA outsourcing supervision framework.
Top cybersecurity services providers in Japan
The 14 firms below are ranked by verified delivery presence in Japan, with focus and rating drawn from TechVendorIndex verified reviews. No vendor pays for placement.
Provider
Focus in Cybersecurity Services
Rating
Reviews
NTT DATA Japan
HQ: Tokyo · BFSI, public sector, SAP
SOC, MDR and incident response
4.1
1,840 reviews
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Fujitsu
HQ: Tokyo · Managed services, mainframe, AI
SOC, MDR and incident response
3.9
1,620 reviews
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NEC Corporation
HQ: Tokyo · Public sector and network
SOC, MDR and incident response
3.9
1,320 reviews
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Hitachi Vantara
HQ: Tokyo / Santa Clara · Data, storage, OT
SOC, MDR and incident response
4.0
1,180 reviews
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Nomura Research Institute
HQ: Tokyo · Financial services platforms
SOC, MDR and incident response
4.2
980 reviews
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Accenture Japan
HQ: Tokyo · BFSI, retail, cloud
SOC, MDR and incident response
4.2
820 reviews
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IBM Japan
HQ: Tokyo · Cloud, AI, mainframe modernisation
SOC, MDR and incident response
4.0
920 reviews
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TCS Japan
HQ: Tokyo · BFSI and application services
SOC, MDR and incident response
4.0
480 reviews
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Infosys Japan
HQ: Tokyo · Banking and application services
SOC, MDR and incident response
4.0
420 reviews
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Capgemini Japan
HQ: Tokyo · SAP, engineering, public sector
SOC, MDR and incident response
4.0
320 reviews
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CTC (Itochu Techno-Solutions)
HQ: Tokyo · Infrastructure and applications
SOC, MDR and incident response
4.1
540 reviews
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SCSK
HQ: Tokyo · Application services and managed
SOC, MDR and incident response
4.0
420 reviews
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BIPROGY (Nihon Unisys)
HQ: Tokyo · BFSI and public sector
SOC, MDR and incident response
3.9
320 reviews
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TIS Inc.
HQ: Tokyo · BFSI and managed services
SOC, MDR and incident response
4.0
380 reviews
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Cybersecurity Services market overview in Japan
Within the broader JPY 22 trillion enterprise IT services market in Japan, cybersecurity services is one of the more active disciplines, growing roughly in line with the 3.6% headline expansion of the wider services market. Demand is concentrated in Tokyo and Osaka, where the largest banking and insurance and automotive buyers maintain dedicated programme teams. Procurement decisions are shaped by the fact that Japan is the second largest IT services market in Asia, characterised by long-tenured systems-integrator relationships with NTT, Nomura Research Institute and the Big Three SIers Fujitsu, NEC and Hitachi. Ransomware extortion and supply-chain compromise remain the top buyer concerns. Regulatory obligations under the APPI, the FISC Security Guidelines, the METI Cybersecurity Management Guidelines and the JFSA outsourcing supervision framework continue to widen, pushing buyers toward 24/7 detection coverage and pre-negotiated incident response retainers rather than reactive engagement. Mid-market buyers in Japan increasingly favour specialist firms with deep domain expertise over generalist consultancies, while the largest programmes continue to be awarded to the multinational integrators with global delivery models and embedded banking and insurance practices.
How to select a cybersecurity services provider in Japan
Use the following criteria to shortlist providers before issuing a formal request for proposal. Most procurement teams in Japan weight references and operating-model fit more heavily than headline rate cards.
- ISO 27001 and SOC 2 Type II certified delivery from an appropriately located SOC
- Demonstrated incident response experience in banking and insurance with named lead investigators
- EDR, NDR and SIEM tooling expertise relevant to the buyer's existing stack
- Compliance experience with the APPI, the FISC Security Guidelines, the METI Cybersecurity Management Guidelines and the JFSA outsourcing supervision framework and the buyer's sector-specific frameworks
- Threat intelligence relationships with national CERT and industry information-sharing bodies
Typical engagement model
Managed detection and response contracts typically run three years on a per-asset or per-employee monthly fee, with incident response retainer hours pre-purchased. Penetration testing is sold by scope at fixed fee, ranging from USD 25,000 for an application test to USD 500,000+ for a red team engagement.
Pricing should always be benchmarked against at least three references in Japan at comparable scope. Engage independent advisory support before signing multi-year contracts above USD 5M annual contract value.
Related categories and regions
Compare the cybersecurity services market in Japan with other service lines in the same country, or with cybersecurity services in other markets covered by TechVendorIndex.
Frequently asked questions
What does a managed SOC cost in Japan?
Managed SOC pricing in Japan typically runs USD 8 to USD 25 per endpoint per month for 24/7 coverage. Larger enterprises with EDR and SIEM ingestion needs are priced per gigabyte or per asset, with annual contract values from USD 500,000 upward.
Do we need a local SOC in Japan?
Regulators in Japan usually permit follow-the-sun delivery so long as the provider can demonstrate data residency for sensitive telemetry. Some banking and insurance regulators require an in-country incident response presence.
What is included in a typical incident response retainer in Japan?
Retainers include a defined number of pre-purchased response hours, a 24/7 hotline, named lead investigators, table-top exercises and forensic readiness assistance. Unused hours often convert to advisory work at quarter-end.
How do we test the quality of a cybersecurity provider in Japan?
Reference calls with breached customers (under NDA), review of recent investigation reports, a paid scoping exercise, and a purple-team or attack-path simulation are the most reliable signals of operational quality.
Last updated: May 2026