Komori
Occurring Fact3542Vega corporation Co.,Ltd.Retail

Notice regarding the potential leakage of personal information following unauthorized access to an external service used by the Company

An external service operated by 株式会社ブランジスタソリューション was accessed without authorization by a third party, and it was discovered that up to 392 order records relating to the Company’s EC marketplace stores may have been leaked. The Company disconnected the API integration with the service and blocked the transfer of new data.

Worth reading
58In focus
Scored from 4 of 5 sections
Direction
Deterioration
Direction inferred from the company’s description.
Scale
392
cases (maximum)
Wording
Avoiding a definitive answer
How definitive the wording is.

Notice regarding the potential leakage of personal information following unauthorized access to an external service used by the Company

Subject Entity

株式会社ブランジスタソリューション (the operator of the service affected by the unauthorized access) and Vega corporation Co.,Ltd. (the company holding the personal information)

Target Locations / Products

LOWYA Rakuten Market store, LOWYA Yahoo! Shopping store, LOWYA Amazon store, BAROCCA Rakuten Market store, LALA STYLE Rakuten Market store, and SUMICIA Rakuten Market store. The LOWYA proprietary EC site is not covered.

Awareness or receipt of notice10 November 2026 (notification received from 株式会社ブランジスタソリューション)
This disclosure11/13/2026
Cause

A third party accessed the system of 株式会社ブランジスタソリューション without authorization, creating the possibility that some order information was leaked externally.

Company response

Suspended operations

The API integration with the “Matomaru EC Store Manager” system for each EC marketplace store in the LOWYA business was disconnected, and the transfer of new data was blocked.

Investigation structure

The Company is proceeding with inquiries to 株式会社ブランジスタソリューション and identification of the scope of the impact. Establishment of a third-party committee or similar body: Not disclosed.

Outlook

The Company will proceed with inquiries to 株式会社ブランジスタソリューション, identification of the scope of the impact, and any necessary measures.

Planned follow-up disclosure

If any matters requiring new disclosure are identified, the Company will promptly announce them.

Event that occurred
ItemDetails
Event nameNotice regarding the potential leakage of personal information following unauthorized access to an external service used by the Company
Date recognized / date notice received10 November 2026 (notification received from 株式会社ブランジスタソリューション)
Subject Entity株式会社ブランジスタソリューション (the operator of the service affected by the unauthorized access) and Vega corporation Co.,Ltd. (the company holding the personal information)
Target Locations / ProductsLOWYA Rakuten Market store, LOWYA Yahoo! Shopping store, LOWYA Amazon store, BAROCCA Rakuten Market store, LALA STYLE Rakuten Market store, and SUMICIA Rakuten Market store. The LOWYA proprietary EC site is not covered.
CauseA third party accessed the system of 株式会社ブランジスタソリューション without authorization, creating the possibility that some order information was leaked externally.
Suspended operationsThe API integration with the “Matomaru EC Store Manager” system for each EC marketplace store in the LOWYA business was disconnected, and the transfer of new data was blocked.
Investigation structureThe Company is proceeding with inquiries to 株式会社ブランジスタソリューション and identification of the scope of the impact. Establishment of a third-party committee or similar body: Not disclosed.
OutlookThe Company will proceed with inquiries to 株式会社ブランジスタソリューション, identification of the scope of the impact, and any necessary measures.
Planned follow-up disclosureIf any matters requiring new disclosure are identified, the Company will promptly announce them.
Items this document does not state (16)
Date of occurrenceAmount of Impact on Business PerformanceAccounting period in which recognizedImpact on Earnings ForecastType of litigation or proceedingCourt or authorityPlaintiffDefendantDate of filing / date of actionClaim amount / surcharge amountAmount of receivables at risk of non-collection or delayed collectionScheduled resumption dateMeasures to prevent recurrenceDirectors' and officers' liabilityVoting rights ownership percentage before the changeVoting rights ownership percentage after the change

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.

A third party accessed the system of 株式会社ブランジスタソリューション without authorization, creating the possibility that some order information was leaked externally.

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.
Weight is not a verdictIt measures how much this changes what the company had already told the market. It is not a view on the shares.
Corrections happenIf the company reissues this disclosure, the page is rebuilt from the corrected version and the revision number moves up.
Notice regarding the potential leakage of personal information following unauthorized access to an external service used by the Company | Vega corporation Co.,Ltd. (3542) timely disclosure | Komori