Japan Post Bank "mijica" Massive "illegal" access detection No mechanism October 5, 17:58
Japan Post Bank did not have a mechanism to detect a large amount of suspected fraudulent access due to the problem that the personal information of more than 1,400 people may have been stolen with the debit card / prepaid card "mijica" issued by Japan Post Bank. I understand.
On the dedicated site for the debit card / prepaid card "mijica" issued by Japan Post Bank, there was a large amount of unauthorized access from late July to mid-July, and 1422 members were illegally logged in, and their names, date of birth, etc. It is known that personal information such as the last four digits of the card number may have been stolen.
According to Japan Post Bank, at this time, the number of accesses was 100 to 800 times higher than usual, but there was no mechanism to detect such a large amount of suspected fraudulent access.
Japan Post Bank says that it has temporarily suspended the use of the target member's card and then contacted the member to investigate whether there was any illegal withdrawal of savings.
It is said that no damage has been confirmed at this time, but the lack of security in Japan Post Bank's cashless payments will be questioned again.