BOOKOFF: an email to BOOKOFF Online members carried a file listing 1,309 members' email addresses

An email to users of the BOOKOFF Online home pickup buying service had a file attached by mistake that listed the email addresses of 1,309 members.

Disclosed

2020-03-04

Organizations involved

Leaked or at risk

1.3K

1,309

Downtime

Unknown

What happened

2020-03-03 16:48
A customer center employee sent an email to users of the Takuhonbin home pickup buying service with a file of email addresses attached by mistake. [1]
2020-03-03 17:17
A customer who received it pointed out the error. [1]
2020-03-03 18:33
The company apologized to the 1,309 people and asked them to delete the email and the file. [1]
2020-03-04
Public disclosure. [1]

{n:1309} email addresses of members who received the company's notices became visible to other recipients. [1]

Service	Role	Impact level	Note
BOOKOFF Online	[Breached]	[Moderate]

[Breached][Moderate]Kanagawa, Sagamihara, MinamiWholesale and retail trade1,309 leaked
BOOKOFF Corporation

						Note
BOOKOFF Corporation	[Breached]	[Moderate]	Kanagawa, Sagamihara, Minami	Wholesale and retail trade	1,309