> JapanHacked_
[Resolved][Severity: Major][Intrusion]

Mitsubishi Electric and Mitsubishi Electric Information Systems: a network managed by Mitsubishi Electric was accessed from abroad and part of the domestic customer data leaked

Unusual access from abroad was detected on October 8, and on the 15th a leak of Mitsubishi Electric Information Systems' domestic customer data was confirmed.

Disclosed

2021-10-22

Organizations involved

2

Leaked or at risk

Unknown

Downtime

Unknown

What happened

  1. Mitsubishi Electric detected unusual access from abroad to a network it manages. [1] [2]

  2. The leaked information was identified. [1] [2]

  3. The two companies announced the case. [1] [2]

Impact

Only information on domestic customers held by Mitsubishi Electric Information Systems, which uses the network, leaked, and no other leak was confirmed. The customers concerned were told individually and confirmed there was no effect. The access was blocked. [1]

Timeline

  1. Started, Detected 2021-10-08
  2. Disclosed 2021-10-22
  3. 14 days

Attack or cause

Method
[Intrusion]
Impact
[Data leak]
Entry point
Unknown

Data exposed or at risk

–

Organizations involved

Open in organization search

Sources

  1. [1][Official]不正アクセスによる情報流出についてMitsubishi Electric Corporation and Mitsubishi Electric Information Systems Corporation · 2021-10-22
  2. [2][News]三菱電機管理のネットワークに海外から不正アクセス、顧客に関する情報の一部が流出ScanNetSecurity · 2021-10-26 08:05