About outflow of e-mail address by e-mail mistransmission of e-mail of Totsuka Residents' Activities Center

When sending an e-mail about course information at the Totsuka Residents' Activities Center, set the e-mail address of the organization that has registered for distribution is set to a method (BCC) in which the e-mail address of other recipients cannot be distinguished and sent. However, it turned out that the e-mail addresses of all members were displayed (TO [address]). We deeply apologize for the occurrence of such a case, and we will thoroughly implement measures to prevent recurrence.