Sega confirmed that a cyberattack on Arara, a Japanese email distribution firm the publisher uses for newsletters, exposed 2,196,044 email addresses. Of those, 92,273 were linked to Sega newsletter distributions. The affected newsletters included Tokyo Game Show exhibition announcements, Chunithm Mate arcade rhythm game launch details, Sega Lucky Kuji Online lottery service updates, Ongeki Re:Fresh Act.2, and Maimai DX MAGiCAL.
Sega stated that Sega user accounts remain unaffected. The publisher confirmed no names, dates of birth, genders, residential addresses, phone numbers, credit card information, or passwords were leaked. No reports of misuse had emerged as of Sega's announcement.
Sega advised those who received the affected newsletters to watch for phishing attempts. The company has halted further newsletter distribution through Arara pending investigation and plans to contact each affected person once details are confirmed.