Disk Union data breach: 690K accounts exposed
Severity: high · Patch status: no-fix-needed · Since 2025-06-07
In June 2022, the Japanese record chain store Disk Union suffered a data breach. The incident exposed 690k unique email addresses along with names, post codes, phone numbers and plain text passwords. Exposed data: email addresses, geographic locations, names, passwords, phone numbers, usernames. The breach dates from Jun 24, 2022; Have I Been Pwned loaded it on Jun 7, 2025.
What to do
- If you had a Disk Union account, change its password and the password of any other account that reused it.
- Turn on multi-factor authentication wherever it is offered.
- Check whether your addresses are in this breach at https://haveibeenpwned.com.
- Expect targeted phishing that quotes the leaked details; verify any unexpected contact out of band.
Sources
All live incidents on Threat Watch