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JAENES
BPossible leakOctober 16, 2026 announced

北海道中央バス株式会社（予約サイト「発車オーライネット」）Data breach / unauthorized access incident

笹尾 祐太朗の写真Reviewed by Yutaro SasaoWritten by Leak Watch editorial team published ・ updated
Occurred on
July 16, 2026
Announced on
October 16, 2026
Severity
BIncidents centered on names and contact details.
Scale
5,600 people
Main impact
Due to unauthorized access by a third party to the integration server for the reservation site 「発車オーライネット」, it was announced that partial reservation information for about 5,600 people (names in katakana, phone numbers, boarding dates, routes, etc.) may have been leaked. Users have been warned to be cautious of suspicious phone calls and SMS.
Information involved
Full namePhone number
Cause / key point
Report of data leakage caused by unauthorized access by a third party to the reservation site's integration server.
Industry
Transport & travel
Listing / capital
Unlisted
Sources
Last updated
October 28, 2026

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Written & reviewed

笹尾 祐太朗の写真

Reviewed byYutaro SasaoFounder & CEO, MediaLeap Inc.

CEO of MediaLeap Inc. Working on both sides of web advertising and web media since 2013; founded the company in May 2025.

Review scope: cross-checking against primary sources (official and government announcements), verifying claims stay within the facts, and checking source attribution。Last reviewed:

Written by:Leak Watch editorial team (AI-assisted drafts verified against sources by the editorial team) · Reviewer profile · Request a correction

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Attack method classification: Unauthorized access (method undisclosed)(Breached, but the technique was not identified or disclosed)

Read the Unauthorized access (method undisclosed) guide and national trends →

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