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

S Point: about 10 million login attempts on the member site broke into 1,094 accounts

The member site of the Hankyu Hanshin group's point program was hit by brute force logins. Names and points of 44 members were seen and one member's points were exchanged.

Disclosed

2020-08-11

Organizations involved

3

Leaked or at risk

1.1K

1,094

Downtime

Unknown

What happened

  1. From this day to August 2, about 10 million login attempts came from several foreign IP addresses. [1] [2]

  2. The attack was discovered and the member site was suspended. [1] [2]

  3. The entered accounts were locked. [2]

  4. Public disclosure; affected members were informed by email. [2]

  5. The member site reopened, and users were asked to set new passwords. The terms of use were revised along with the new login method. [3]

Impact

1,094 accounts were entered. Names and point balances of 44 members were seen, and exchanges into other companies' points were started for them. 43 were stopped in time, but one member's 1,000 points were exchanged. [1] [2]

Response

The attackers' IP addresses were blocked and the 44 members were asked by phone to change their IDs and passwords. The site stayed down while security was improved, and the police were informed. [2]

Timeline

  1. Started 2020-07-24
  2. Detected 2020-08-06
  3. Disclosed 2020-08-11
  4. 18 days

Attack or cause

Method
[Credential abuse]
Impact
[Data leak][Fraud]
Entry point
Unknown

Data exposed or at risk

[Name]

Services hit

Organizations involved

Open in organization search

Sources

  1. [1][News]「Sポイント」会員サイトに約1000万回のログイン試行 - ポイント交換もSecurity NEXT · 2020-08-12
  2. [2][News]Sポイントメンバーサイトにブルートフォースアタック型攻撃、1名のポイントが不正交換(阪急阪神ホールディングス他)ScanNetSecurity · 2020-08-13 08:00
  3. [3][Official]【重要なお知らせ】Sポイントメンバーサイト再開とパスワードの取り直しのお願いHankyu Hanshin Point · 2020-09-15