The flash drive, placed inside a bag lost after a night of drinking and dining on Tuesday, included residents’ names, addresses, dates of birth, and some bank account numbers for 460,000 residents in Amagasaki, the city said Thursday.
“We will thoroughly ensure security management when handling electronic data,” the city said in a statement obtained by the Japan Times. “We will work to regain our residents’ trust by heightening awareness of the importance of protecting personal information.”
There is no evidence the data have been leaked, city officials said. The flash drive was password protected and the data were encrypted.
The man, whose name was not disclosed, was an employee of a company assisting the city with rolling out COVID-19 relief funding.
Amagasaki is located in the Hyogo prefecture.