> JapanHacked_
[Resolved][Severity: Major][Credential abuse]

Hard Off: credential stuffing on the Hard Off Net Mall logs into 149 accounts

Logins with IDs and passwords leaked from other services broke into 149 accounts of the Hard Off Net Mall, whose member data may have been viewed.

Disclosed

2020-01-10

Organizations involved

1

Leaked or at risk

149

149

Downtime

Unknown

What happened

  1. Login attempts with credentials from other services began and lasted until 7 January 2020. [1]

  2. Access monitoring revealed the logins. [1]

  3. Public disclosure; the members were contacted and the police informed. [1]

Impact

In the {n:149} accounts, name, address, phone, email, gender, occupation, birth date, purchase history, delivery addresses and partial card details (holder, expiry, last three digits) may have been viewed. [1]

Response

The affected IDs cannot be used until the password is changed, and the attacking sources were blocked. [1]

What users should do

Members who use the same password elsewhere were asked to change it at once. [1]

Timeline

  1. Disclosed 2020-01-10
  2. 1 days

Services hit

Organizations involved

Open in organization search

Sources

  1. [1][Official]「リスト型アカウントハッキング(リスト型攻撃)」による弊社ハードオフネットモールへの不正ログインの発生とパスワード変更のお願いについてHard Off · 2020-01-10