Digital Agency: in a press email it put 408 journalists' addresses in CC instead of BCC
In an email sending press material, it put 408 email addresses in CC, making them visible to every recipient.
Disclosed
2021-11-24
Organizations involved
1
Leaked or at risk
408
408
Downtime
Unknown
What happened
Cause
One staff member worked alone and did not check the recipient field. One earlier case of the same mistake was also found. [1]
Timeline
- Started, Detected, Disclosed 2021-11-24
- 1 days
Attack or cause
- Method
- [Misdelivery]
- Impact
- [Data leak]
- Entry point
Data exposed or at risk
Organizations involved
[Breached][Major]Tokyo, ChiyodaNational government408 leaked
Digital Agency
Sources
- [1][Official]メールの宛先の誤りについてDigital Agency · 2021-11-26
- [2][News]デジ庁がメールアドレス流出、記者ら400件 BCCとCC取り違えThe Asahi Shimbun · 2021-11-25
- [3][News]デジタル庁、報道機関向けのメール誤送信 アドレス400件をBCCではなくCCに記載ITmedia Business Online · 2021-11-24