Burger King Japan data breach hits 11.18 million app users

Burger King Japan disclosed a breach exposing data of about 11.18 million official app members after attackers accessed its membership system between October 2 and October 7, 2026. The leak was confirmed on October 13 and disclosed on October 15; no card numbers or passwords were exposed.

• Breach affected roughly 11.18 million app users
• Unauthorized access occurred October 2–7, 2026
• Leaked data includes names, emails, phones, birth dates and prefecture
• No card numbers stored, no confirmed fraud cases so far