> JapanHacked_
[Contained][Severity: Moderate][Credential abuse]

Chuo University: two faculty email accounts were misused, and the names and email addresses of up to 1,082 people who had emailed them may have leaked

Two faculty IDs on the faculty mail server were misused, and the names and email addresses of up to 1,082 people who had emailed them may have been obtained.

Disclosed

2025-09-19

Organizations involved

1

Leaked or at risk

Unknown

Downtime

Unknown

What happened

  1. It announced that two faculty IDs on its faculty mail server (tamacc.chuo-u.ac.jp) had been misused. [1] [2] [3]

Impact

From the mail index stored on the server, the names (display names) and email addresses of 692 people who emailed teacher A by 23:09 on July 19, 2025 and 390 people who emailed teacher B by 04:58 on July 23, up to 1,082 records in all, may have been obtained. Not all faculty are affected, and the university contacts those concerned by email. [1] [2]

Timeline

  1. Disclosed 2025-09-19
  2. 1 days

Attack or cause

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

Data exposed or at risk

[Name][E-mail address]

Organizations involved

Open in organization search

Sources

  1. [1][Official]不正アクセスによる個人情報流出に関するお詫びとお知らせChuo University · 2025-09-19
  2. [2][News]中央大学、最大1082件の氏名・アドレスが流出の可能性 教員のメールアカウントに不正利用被害ITmedia NEWS · 2025-09-24
  3. [3][News]中央大学の教員用メールサーバに不正アクセスScanNetSecurity · 2025-10-01 08:05