Daiwa Securities Data Breach
Major Japanese investment bank and brokerage firm Daiwa Securities Co. Ltd. disclosed on October 5, 2026, that an external web inquiry and FAQ management platform, "i-ask," operated by vendor Scala Communications Inc., suffered unauthorized access around October 3, 2026.
Exposed Data Types
5- Names
- Email addresses
- Phone numbers
- Physical addresses
- Financial information
About This Breach
Forensic checks confirmed that approximately 220,000 inquiry records relating to roughly 110,000 customers were exposed.
Compromised data included full names, email addresses, telephone numbers, residential addresses, branch codes and brokerage account numbers, and the text of submitted customer inquiries. Core trading platforms, asset balances, and login credentials were not affected.
Verification and editorial method
LeakData compares the incident name, date, affected-record count, and exposed data types with accessible sources. Unverified fields are not presented as facts, and records are updated when new evidence becomes available.
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