Hirota: a mail magazine was sent with recipients set in the To field by mistake, letting 2,350 subscribers see each other's email addresses
A mail magazine was sent with the recipients in the To field, so the email addresses of 2,350 subscribers were visible to one another.
Disclosed
2021-03-25
Organizations involved
1
Leaked or at risk
2.4K
2,350
Downtime
Unknown
What happened
When sending a notice for "Cream Puff Day" as a mail magazine, the company set the recipients in the To field by mistake. It was sent shortly after 11:30. [1]
Impact
Timeline
- Started 2021-03-19
- Disclosed 2021-03-25
- 6 days
Attack or cause
- Method
- [Misdelivery]
- Impact
- [Data leak]
- Entry point
Data exposed or at risk
Organizations involved
[Breached][Moderate]Chiba, ShibayamaManufacturing2,350 leaked
Yogashi no Hirota Co., Ltd.
Sources
- [1][News]メルマガで送信ミス、メアド2350人分が流出 - 洋菓子のヒロタSecurity NEXT · 2021-03-25