Osaka Museum of HistoryVolunteer contact emails
1MinorConfirmedAnnounced
An event email was sent with recipients in CC instead of BCC, showing the addresses of 4 volunteers (one with a name). Recipients were asked to delete it.
This incident was imported from a dataset that compiles public announcements, and we are still checking it against the sources. Counts and causes will be updated after the check. Sources are in Japanese.
- Cause
- Sent to the wrong person
- Occurred
- 2026-10-07
- Sector
- Public sector
- Operational impact
- None
Data involved
| Data | Status | Count | Group | Evidence |
|---|---|---|---|---|
| Email address | Leak confirmed | 4 people | — | Source(opens in a new tab) |
| Name | Leak confirmed | 1 people | — | Source(opens in a new tab) |
Counts are the figures the organization announced. Because the same person may be counted more than once, we do not add the rows together.
What users should do
- Watch for emails and texts pretending to be the company
General steps based on the type of data involved. Check the organization’s notice or help line to see whether you are affected.