Personal information leaks at major companies have continued, with trading on dark web sites being reported. Following announcements from companies including Yamato Holdings and Nihon Keizai Shimbun, the number of leaked records could reach several million to tens of millions.
Personal information leaks by companies have continued one after another, and experts have warned of secondary damage. Yamato Holdings announced that the names and addresses of approximately 5.31 million people had been leaked, while Nihon Keizai Shimbun reported a leak involving approximately 1.83 million records and Yellow Hat reported a leak involving the membership information of approximately 1.8 million people.
Reports have indicated that personal information is being bought and sold on dark web sites. Driver's licenses are traded for approximately ¥170,000 each, and the risk of fraudulent bank account and card creation has been highlighted. One reported case involved information leaked from an esthetic salon booking site being listed as approximately 32.5 million records.
According to a JNN compilation, data leaks announced over the past 3 weeks involved more than 70 companies, with the total number of records reportedly exceeding 100 million. The operators of the dark web sites explain that “information leaked recently has not yet been put up for sale,” but concerns remain that the damage could continue to spread.