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Other Disclosures4421D.I.System Co.,Ltd.Information and Communications, Services and Others

Exhibiting at Japan IT Week Spring 2026 [Information Security EXPO]

The Company will exhibit jointly with BlackBox Japan Co., Ltd. at an exhibition in April 2026 and showcase the UBA security product BlackBox Suite. The Company has already entered into a partnership agreement with BlackBox Japan Co., Ltd. covering product sales and related matters, and is proceeding with the product's rollout in the Japanese market.

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Improvement
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Wording
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Announced details

BlackBox Suite
Applicable field (uses covered by this announcement)
Information SecurityInternal AuditGovernment and public-sector institutionsFinanceManufacturingEducation
Launch date8–10 April 2026 (scheduled; to be showcased at the exhibition)
What the company reported numerically
Usage history

No. 1 market share in UBA and access-monitoring software in South Korea. The product has been adopted by government and public-sector institutions, financial services companies, manufacturers, educational institutions and others (number of deployments not disclosed).

Relationship between the counterparty and the company
D.I.System Co.,Ltd.4421
Relationship with the Company

The Company has entered into a partnership agreement with BlackBox Japan Co., Ltd. covering product sales and related matters, and will exhibit jointly with the company. BlackBox Suite is a WEEDS KOREA product that BlackBox Japan will roll out for the Japanese market.

CounterpartyBlackBox Japan Co., Ltd.WEEDS KOREA Co., Ltd.

BlackBox Japan Co., Ltd. is headquartered in Shinjuku-ku, Tokyo, and its representative director is Hayashi Naoko (林直子). WEEDS KOREA Co., Ltd. is based in Seoul, South Korea.

Location (as indicated in this announcement)

Tokyo Big Sight (3-11-1 Ariake, Koto-ku, Tokyo)

In this announcement the company addresses none of Contract Value / Offering price / Impact on Business Performance.

Announced details
ItemDetails
Names of Products / Services CoveredBlackBox Suite
CounterpartyBlackBox Japan Co., Ltd., WEEDS KOREA Co., Ltd.
Counterparty overviewBlackBox Japan Co., Ltd. is headquartered in Shinjuku-ku, Tokyo, and its representative director is Hayashi Naoko (林直子). WEEDS KOREA Co., Ltd. is based in Seoul, South Korea.
Relationship with the CompanyThe Company has entered into a partnership agreement with BlackBox Japan Co., Ltd. covering product sales and related matters, and will exhibit jointly with the company. BlackBox Suite is a WEEDS KOREA product that BlackBox Japan will roll out for the Japanese market.
Launch date8–10 April 2026 (scheduled; to be showcased at the exhibition)
Applicable areaInformation Security, Internal Audit, Government and public-sector institutions, Finance, Manufacturing, Education
LocationTokyo Big Sight (3-11-1 Ariake, Koto-ku, Tokyo)
Usage historyNo. 1 market share in UBA and access-monitoring software in South Korea. The product has been adopted by government and public-sector institutions, financial services companies, manufacturers, educational institutions and others (number of deployments not disclosed).
Items this document does not state (10)
Contract ValueOffering priceContract DateAward/certification nameAwarding / certifying bodyRegistration number and expiry dateLocation scaleQuantitative EffectsImpact on Business PerformanceSource

These are items the company does not state in this document. We do not leave them blank, nor fill them in from other sources or by inference.

The reasons the company gives

The company's own explanation, not something inferred from the numbers.

To expand the business scope of the security solutions business and help address the security challenges faced by Japanese companies.

How to read this page

This is not the documentKomori reads the disclosure the company filed and writes this summary. Figures are as stated by the company and are not audited.
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Corrections happenIf the company reissues this disclosure, the page is rebuilt from the corrected version and the revision number moves up.
Exhibiting at Japan IT Week Spring 2026 [Information Security EXPO] | D.I.System Co.,Ltd. (4421) timely disclosure | Komori