Book Off controversies
Controversies tied to this brand in public sources. A listing is not a finding of fault.
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2026
BOOKOFF discloses member-system breach
Issue disclosure
BOOKOFF announced that a third party had breached its member system, resulting in the leak of 6,427,735 user records involving 6,383,279 people. The potentially exposed information included personal details and hashed password data. The company disclosed the incident as a controversy note concerning the unauthorized access and the resulting data exposure.
Company response
Remediation — BOOKOFF
公司于 10 月 6 日成功封锁攻击来源的连接及遭利用的访问途径，并加强访问控制。
Ongoing disclosure — BOOKOFF
目前，BOOKOFF 正在陆续向受影响的用户电子邮箱发送通知。
Source excerpt
可能泄露的信息包括姓名、出生日期、性别、电子邮箱地址、电话号码、会员登记的邮政编码及地址、积分卡号、会员编号，以及经过哈希处理的密码数据。
日本二手商品连锁品牌 BOOKOFF 于 10 月 13 日发布公告，确认旗下会员系统遭第三方入侵，共有 642 万 7735 条用户数据遭泄露，涉及 638 万 3279 人，其中包括 21 万 2371 名已注销用户。