ディップ（アルバイト情報サイト「バイトル」「バイトルNEXT」）Data breach / unauthorized access incident
- Occurred on
- October 6, 2026
- Announced on
- October 9, 2026
- Severity
- CLimited data such as email addresses and identifiers.
- Scale
- 3,885,771 records
- Main impact
- They announced that due to unauthorized access from overseas targeting some website functions, up to 3,885,771 member email addresses may have been obtained; names, phone numbers, passwords, and credit card information were not included. After confirming the incident they fully blocked access from overseas, completed repairs to the affected program, reported to the Personal Information Protection Commission and the 関東総合通信局, and consulted the police; no internet leak or misuse has been confirmed.
- Information involved
- Email address
- Cause / key point
- Unauthorized access from overseas exploiting a system specification flaw (confirmed on 2026年10月6日)
- Industry
- Services & other
- Listing / capital
- Listed companyTSE Prime 2379(ディップ)
- Sources
- Last updated
- October 29, 2026
Stock price reaction to the disclosureディップ / 東証プライム 2379
Stock information is reference data based on Yahoo Finance and may be delayed. This site does not solicit or advise investment and does not guarantee the accuracy or completeness of this information. We accept no liability for any investment decision based on it.
Where to go for this information
The steps themselves are on the protection guide. These links match the kinds of data in this incident, plus support contacts.
Ask AI about this incident
Opens an AI chat with this page's URL already in the prompt. Treat the answer as a starting point — always verify with the official sources listed above.
Is this incident worth paying attention to?
Written & reviewed
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
Related incidents
Browse the database →Incidents sharing the same company, service, attack method or industry (grouped automatically from the disclosures).
Incidents related to "プログラム"
Incidents where the damage spread through the same service or system.
- SGMOインターネット（お名前.com デスクトップクラウド）2026.10.21 announced・Affected 26,739 records
- Aデジタルアーツ（クラウドサービス運用環境）2026.10.21 announced・Affected Unknown
- Sリンクステーション（GETTIIS会員情報）2026.10.19 announced・Affected Unknown
- Bユミルリンク（メール配信システムCuenote FC・Cuenote BASE）2026.10.19 announced・Affected 51,628,280 records
- SSEストアー(ショップサーブ)2026.10.16 announced・Affected 23,356,000 people
- Aアズマ（hitmart）2026.10.08 announced・Affected Unknown
Same attack method
- A佐川急便（お荷物問い合わせ）2026.10.01 announced・Affected 53,230,000 records
- SSソースネクスト2026.10.15 announced・Affected 22,519,960 records
- SSバーガーキング・ジャパン(公式アプリ)2026.10.15 announced・Affected 11,180,000 records
- SS焼肉きんぐ2026.10.05 announced・Affected 10,788,963 records
- SSタイムズカー(タイムズモビリティ)2026.09.25 announced・Affected 6,600,000 accounts
- Sブックオフグループ(ブックオフコーポレーション)2026.10.09 announced・Affected 6,383,279 people
Same industry
- SSリクルート（カーセンサーnet、C-MATCH）2026.10.21 announced・Affected 3,709,551 records
- SENEOSパワー（ENEOSでんき・でんきサービスのお客さまページ）2026.10.28 announced・Affected 57 people
- S日本郵政（ゆうID・ゆうゆうポイント）2026.10.19 announced・Affected 249 accounts
- Sスクウェア・エニックス2026.10.19 announced・Affected Unknown
- S第一興商（ビッグエコー等）2026.10.08 announced・Affected 8,631,000 records
- Sセレス（ポイントインカム）2026.10.07 announced・Affected 195 records
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 →