> JapanHacked_
[Contained][Severity: Moderate][Intrusion]

Wave: mail-order email account hijacked to send unwanted messages

Model maker Wave suspended its mail-order email account after an intruder used it to send unwanted messages. The scope is under investigation.

Disclosed

2026-10-31

Organizations involved

1

Leaked or at risk

Unknown

Downtime

Unknown

What happened

A third party took over the mail-order account [email protected] and used it to send unwanted emails. Wave disclosed this on 31 October and suspended the account at the mail server. It has not disclosed when or how access occurred or whether data leaked. [1]

What users should do

Wave asks recipients to delete unexpected messages from this address without opening their links or attachments. It is investigating the scope and cause. [1]

Timeline

  1. Disclosed 2026-10-31
  2. 1 days

Attack or cause

Method
[Intrusion]
Impact
[Service outage]
Entry point
Unknown

Data exposed or at risk

–

Organizations involved

Sources

  1. [1][Official]【重要】弊社メールアドレスの不正利用(スパム送信)に関するお詫びとご注意のお願いWave · 2026-10-31