Customer data loss cases at major Japanese banking groups, regional banks and credit unions mounted to more than 1.8 million as of Friday, according to a tally compiled by Kyodo News based on their announcements.
The figure was gleaned from in-house investigations at financial institutions across the nation that were ordered by the Financial Services Agency in early April.
Most of the financial institutions said the lost data may have been mistakenly discarded, and claimed the chances of leaks outside the institutions are slim.