Komori
Occurring Fact3926Open Door Inc.Information and Communications, Services and Others

Apology and Notice Regarding the Leakage of Email Addresses Due to Unauthorized Access

An unauthorized third party accessed the Travelko travel comparison website, resulting in the external leakage of 381,926 email addresses belonging to Travelko email newsletter subscribers. The email newsletter service has currently been suspended, while the Company is blocking the intrusion route and strengthening security.

Worth reading
46Recurring
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
381926
contracts
Wording
Avoiding a definitive answer
How definitive the wording is.

Leakage of Email Addresses Due to Unauthorized Access

Subject Entity

Open Door Inc. (the Company)

Target Locations / Products

Travelko travel comparison website / Travelko email newsletter subscribers

Occurrence6 November 2026
Same day
Awareness or receipt of notice6 November 2026 (the date on which the Company confirmed and became aware of the unauthorized access and email address leakage)
This disclosure11/09/2026
Cause

Unauthorized access by a third party

Amount of Impact on Business Performance

The impact of this matter on the Company's business performance is currently under review.

Impact on Earnings Forecast

The impact of this matter on the Company's business performance is currently under review. If any matters requiring disclosure arise, the Company will promptly announce them.

Related procedures

Type

Consultation with the police; reports to the Personal Information Protection Commission and other relevant authorities

Court or authority

The police, the Personal Information Protection Commission and other relevant authorities

Company response

Suspended operations

Email newsletter service

Measures to prevent recurrence

Blocking the intrusion route / completing appropriate security measures / strengthening the monitoring framework / tightening access controls for personal information / strengthening personal information protection / implementing security enhancement measures

Outlook

The email newsletter service is currently suspended, but all other services remain available. Going forward, the Company will continue monitoring and implement measures to strengthen security. Individual notices will be sent by email in sequence as preparations are completed.

Planned follow-up disclosure

The company will promptly disclose any matters that should be disclosed in the future.

Event that occurred
ItemDetails
Event nameLeakage of Email Addresses Due to Unauthorized Access
Date of occurrence6 November 2026
Date recognized / date notice received6 November 2026 (the date on which the Company confirmed and became aware of the unauthorized access and email address leakage)
Subject EntityOpen Door Inc. (the Company)
Target Locations / ProductsTravelko travel comparison website / Travelko email newsletter subscribers
CauseUnauthorized access by a third party
Amount of Impact on Business PerformanceThe impact of this matter on the Company's business performance is currently under review.
Impact on Earnings ForecastThe impact of this matter on the Company's business performance is currently under review. If any matters requiring disclosure arise, the Company will promptly announce them.
Type of litigation or proceedingConsultation with the police; reports to the Personal Information Protection Commission and other relevant authorities
Court or authorityThe police, the Personal Information Protection Commission and other relevant authorities
Suspended operationsEmail newsletter service
Measures to prevent recurrenceBlocking the intrusion route / completing appropriate security measures / strengthening the monitoring framework / tightening access controls for personal information / strengthening personal information protection / implementing security enhancement measures
OutlookThe email newsletter service is currently suspended, but all other services remain available. Going forward, the Company will continue monitoring and implement measures to strengthen security. Individual notices will be sent by email in sequence as preparations are completed.
Planned follow-up disclosureThe company will promptly disclose any matters that should be disclosed in the future.
Items this document does not state (11)
Accounting period in which recognizedPlaintiffDefendantDate of filing / date of actionClaim amount / surcharge amountAmount of receivables at risk of non-collection or delayed collectionScheduled resumption dateInvestigation structureDirectors' 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.

Because an unauthorized third party accessed the Travelko website.

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.
Apology and Notice Regarding the Leakage of Email Addresses Due to Unauthorized Access | Open Door Inc. (3926) timely disclosure | Komori