Hewlett-Packard Co.'s Japanese unit said it may have leaked the personal data of 139,583 people in Japan.
The information included names, addresses and telephone numbers, the unit of the Palo Alto, Calif.-based computer and peripheral equipment maker said on its Japanese-language Web site Friday.
The information, from questionnaires and seminar application forms, was mistakenly posted on a Web page and publicly accessible from Feb. 13 to 20.
The company said the information was accessed, but there have been no reports it was misused.