Komori
Occurring Fact3778SAKURA internet Inc.Information and Communications, Services and Others

Regarding the "Notice Concerning Unauthorized Access to Our Systems"

An investigation into the unauthorized access disclosed on 17 August found that the sales management system, which manages customer contract information and other data, may also have been accessed without authorization. Member information for 1,360,563 accounts and hashed password information for 30 of those accounts may have been affected, although the actual scope of the impact and whether any data was taken outside the system are still under investigation.

Worth reading
44Recurring
0–100. This measures how worthwhile something is to read, not how good or bad the company is.
Direction
Deterioration
Direction inferred from the company’s description.
Scale
1360563
Accounts (total number of accounts whose member information may have been affected)
Wording
Avoiding a definitive answer
How definitive the wording is.

Notice Concerning Unauthorized Access to Our Systems (Second Report)

Subject Entity

SAKURA internet Inc.

Target Locations / Products

Sales management system (a system separate from the environments used to provide services including Sakura Cloud)

OccurrenceOn or before 9 August 2026 (when the relevant access to the sales management system occurred)
10 days later
Awareness or receipt of notice19 August 2026 (the date on which the possibility of unauthorized access to the sales management system was confirmed and this matter was disclosed)
This disclosure08/19/2026
Accounting period in which recognized

Consolidated results for the fiscal year ending March 2027 (the impact and other matters are currently being assessed)

Impact on Earnings Forecast

The impact and other matters relating to the consolidated results for the fiscal year ending March 2027 are currently being assessed. The Company will promptly disclose any matters requiring disclosure.

Company response

Investigation structure

Forensic investigation by an external specialist organization

Measures to prevent recurrence

The Company will proceed with formulating and implementing measures to prevent recurrence.

Outlook

The Company will continue its investigation while proceeding with the formulation and implementation of measures to prevent recurrence. It will promptly disclose any newly identified facts requiring disclosure.

Planned follow-up disclosure

The Company will promptly disclose any newly identified facts requiring disclosure.

Event that occurred
ItemDetails
Event nameNotice Concerning Unauthorized Access to Our Systems (Second Report)
Date of occurrenceOn or before 9 August 2026 (when the relevant access to the sales management system occurred)
Date recognized / date notice received19 August 2026 (the date on which the possibility of unauthorized access to the sales management system was confirmed and this matter was disclosed)
Subject EntitySAKURA internet Inc.
Target Locations / ProductsSales management system (a system separate from the environments used to provide services including Sakura Cloud)
Accounting period in which recognizedConsolidated results for the fiscal year ending March 2027 (the impact and other matters are currently being assessed)
Impact on Earnings ForecastThe impact and other matters relating to the consolidated results for the fiscal year ending March 2027 are currently being assessed. The Company will promptly disclose any matters requiring disclosure.
Investigation structureForensic investigation by an external specialist organization
Measures to prevent recurrenceThe Company will proceed with formulating and implementing measures to prevent recurrence.
OutlookThe Company will continue its investigation while proceeding with the formulation and implementation of measures to prevent recurrence. It will promptly disclose any newly identified facts requiring disclosure.
Planned follow-up disclosureThe Company will promptly disclose any newly identified facts requiring disclosure.
Items this document does not state (14)
CauseAmount of Impact on Business PerformanceType of litigation or proceedingCourt or authorityPlaintiffDefendantDate of filing / date of actionClaim amount / surcharge amountAmount of receivables at risk of non-collection or delayed collectionSuspended operationsScheduled resumption dateDirectors' 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.

During the investigation into the unauthorized access to the Sakura Rental Server service disclosed on 17 August 2026, the Company confirmed the possibility of unauthorized access to the sales management system. The cause and any connection with the previously identified unauthorized access are still under investigation.

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.
Regarding the "Notice Concerning Unauthorized Access to Our Systems" | SAKURA internet Inc. (3778) timely disclosure | Komori