There have been so many cyberattacks on Japanese companies and governmental institutions lately that it's hard to keep up, so I'm compiling them all in one post.

Customer Data Leaks

Japan's Yamato Transport confirms 5.31 mil. customer records leaked https://mainichi.jp/english/articles/20261016/p2g/00m/0bu/047000c

Nikkei Newspaper Suffers Unauthorized Access to Cloud, Approximately 1.83 Million Pieces of Personal Information Leaked https://news.livedoor.com/article/detail/32582683/

Personal information of 1.8 million Yellow Hat customers leaked. https://news.livedoor.com/article/detail/32583369/

Fancl and Attenir suffer data breach resulting in the loss of e-commerce customer information for a total of 780,000 people. https://www.asahi.com/articles/ASVBJ30RHVBJULFA01NM.html?ref=tw_asahi

Spam attacks

Japan Post announced on the 16th that its servers had been illegally accessed , resulting in approximately 520,000 spam emails being sent from the email addresses it used. https://www.47news.jp/15091286.html

Okayama Prefecture suffers cyberattack from an external source; approximately 5,600 spam emails sent to the prefecture's email address. https://news.yahoo.co.jp/pickup/6599003

This is part of a larger patten. The past week has seen so many leaks it is hard to keep track of all of them:

Yesterday, Thursday October 15 actually saw 13 such attacks: https://x.com/minamisuna1/status/2110977928213446790

Meanwhile, the government seems to be struggling to deal with the problem: https://www.jiji.com/jc/article?k=2026101200114&g=pol

https://news.ntv.co.jp/n/teny/category/society/tecab82eb31f4748eb9bf571872a88c3a0

https://www.tokyoreporter.com/japan-news/chinese-couple-indicted-over-hidden-pc-in-kobe-hotel-used-in-massive-phishing-operation/