WASABI: unauthorized access to the WASABI SWITCH order and inventory system
On 16 October, WASABI, which provides the e-commerce order management system WASABI SWITCH to resale businesses, said unauthorized access had leaked order data of its client shops. Since the day before, buyers had been receiving emails quoting real orders, posing as refunds for sold-out items and steering them to LINE. The data includes names, addresses, phone numbers, email addresses and order dates and amounts; the system holds no card data. The entry routes were blocked by 20:30 on 18 October, and after matching the affected data against an outside investigation it finished notifying each shop on 25 October. The service remains stopped. KOMEHYO HOLDINGS said on 23 October that 473 orders from group shops leaked, and Valuence Japan says orders placed with ALLU through outside marketplaces may be included.
Disclosed
2026-10-16
Organizations involved
4
Leaked or at risk
Unknown
Downtime
Unknown
Timeline
- Started 2026-10-14
- Detected 2026-10-15
- Disclosed 2026-10-16
- 2 days
Attack or cause
- Method
- [Intrusion]
- Impact
- [Data leak]
- Entry point
- Unknown
Data exposed or at risk
Supply chain
- Organizations listed on this site
- 4
Services hit
Organizations involved
[Through a supplier][Major]Ishikawa, KanazawaWholesale and retail trade82 leaked
K-Brand Off Co., Ltd.82 BRAND OFF orders on its own sites and marketplaces on 14 October.
[Through a supplier][Major]Aichi, Nagoya, NakaWholesale and retail trade336 leaked
KOMEHYO CO., LTD.336 KOMEHYO marketplace orders from 3 to 16 October; 473 across the group.
[Through a supplier][Major]Tokyo, MinatoWholesale and retail trade
Valuence Japan Inc.Orders placed with ALLU through outside marketplaces may be included; the scope is under investigation.
[Breached][Major]Osaka, Osaka, KitaInformation and communications
WASABI Co., Ltd.
Sources
- [1][Official]【重要】不審なメールに関する注意喚起WASABI · 2026-10-15
- [2][Official]【重要・第四報】取引情報データの一時削除とセキュリティ対策強化についてWASABI · 2026-10-18
- [3][Official]不正アクセスに関する調査結果と現在の対応についてWASABI · 2026-10-26
- [4][Official]当社グループが利用する外部システム(委託先)への不正アクセスによる個人情報漏洩に関するお知らせ(2026年10月23日22時時点)KOMEHYO HOLDINGS · 2026-10-23
- [5][Official]【注意喚起(第一報)】当社が利用する外部の受注管理システムへの不正アクセスに伴う、不審なメール(返金案内・LINE誘導)へのご注意のお願いValuence · 2026-10-21