Category: blog

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Cyber Incident at Shin-Nihon Certification Association May Have Exposed Customer Data

On May 11, 2026, the General Incorporated Foundation Shin-Nihon Certification Association announced that, as a result of a cyberattack against the organization, personal data—including customer information belonging to major non-life insurance companies for which it had been providing outsourced services—may have been leaked to external parties.

On the same day, the following insurance companies disclosed details of the incident:

  • Mitsui Sumitomo Insurance Company, Limited
  • Tokio Marine & Nichido Fire Insurance Co., Ltd.
  • Sompo Japan Insurance Inc..
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Nippon Yusen Discloses Unauthorized System Access

Nippon Yusen Kabushiki Kaisha (NYK Line) announced on April 9, 2026, that its vessel fuel procurement system had been accessed illegally by a third party.

According to the company, the unauthorized access occurred on March 24, 2026, and there is a possibility that data was exfiltrated. The information potentially affected includes the personal data of employees (including former employees) and employees of business partners, such as names, company names, phone numbers, and email addresses.

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Takachiho Koheki Launches Token Security in Japan Through Exclusive Partnership

Takachiho Koheki announced on April 8, 2026, that it had entered into an exclusive distribution agreement with Token Security and begun offering Token Security, a new security platform focused on Non-Human Identities (NHIs).

The platform helps organizations establish the foundation required to deploy AI securely and with proper governance, without slowing down AI adoption. It also enables organizations to address emerging security risks associated with the growing operational use of agentic AI, providing advanced capabilities to manage and mitigate these new threats.

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Top 20 Japanese System Integrators (SIers) by Revenue

The following list ranks the leading Japanese system integrators (SIers) by annual revenue, primarily based on FY2025 results.

RankCompanyApprox. Annual Revenue
1NTT DATA GroupUSD 31B (JPY 4.6T)
2FujitsuUSD 24B (JPY 3.6T)
3NEC CorporationUSD 23B (JPY 3.4T)
4Hitachi, Ltd. (IT Services Business)USD 19B (JPY 2.8T)
5Otsuka CorporationUSD 9B (JPY 1.3T)
6Nomura Research Institute (NRI)USD 5.2B (JPY 765B)
7ITOCHU Techno-Solutions Corporation (CTC)USD 5.0B (JPY 730B)
8SCSK CorporationUSD 4.1B (JPY 596B)
9TIS Inc.USD 3.9B (JPY 572B)
10IBM JapanUSD 3.7B (estimated)
11BIPROGY Inc.USD 2.7B (JPY 400B)
12FUJI SOFT IncorporatedUSD 2.2B (JPY 320B)
13Dentsu Soken Inc.USD 1.2B (JPY 180B)
14NSD Co., Ltd.USD 0.9B (JPY 130B)
15Sky Inc.USD 0.8B (estimated)
16SHIFT Inc.USD 0.75B (JPY 110B)
17INTEC Inc.USD 0.7B (estimated)
18NS Solutions Corporation (NSSOL)USD 2.2B (JPY 320B)
19Kanematsu Electronics Ltd.USD 0.6B (JPY 90B)
20Systena CorporationUSD 0.6B (JPY 90B)

Major SIer Categories in Japan

  • Telecommunications-backed: NTT DATA
  • Manufacturer-backed: Fujitsu, NEC, Hitachi
  • Trading Company-backed: CTC, SCSK, Kanematsu Electronics
  • User-backed (Corporate Group IT Subsidiaries): NRI, NSSOL, Dentsu Soken, INTEC
  • Independent SIers: Otsuka Corporation, TIS, BIPROGY, FUJI SOFT, Sky, SHIFT, NSD, Systena
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