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Daiwa Securities' customer data may have leaked due to unauthorized access
Summary by The Tokyo Editorial Desk · As published by The Mainichi (English)
· October 6, 2026
· 1 min read
Photo: The Mainichi (English) · view original
Story provenance No corrections
Summary created by The Tokyo Editorial Desk — automated, rule-governed Published by The Mainichi (English) Original story Read at the source Source published Oct 6, 2026 Indexed here Oct 6, 2026 AI assistance Automated summary drawn from the source’s own published text Prepublication human review No — editorial rules, flagged-item review, and published samples
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Key points Details about the affected individuals are limited, but it is known that around 110,000 customers may be impacted. A securities company has reported a potential data leak.
A securities company has reported a potential data leak. The breach may have exposed information on a large number of customers. Details about the affected individuals are limited, but it is known that around 110,000 customers may be impacted.
The company in question is a major securities brokerage unit. Further information about the breach is available from the company's announcement.
The incident reportedly involves unauthorized access to customer data, although specifics are not provided here. For more details, readers can consult the original report.
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The Mainichi (English) reported and published this story. The Tokyo selected it, summarised the key facts above, and links to the original. We did not report this story and we added no reporting of our own to it.
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As published by The Mainichi (English) . The Tokyo selects stories from publishers’ feeds, summarises them, and links back to the publisher that reported them. We add no reporting of our own. We attribute every source, link to the original report, and follow a documented editorial standards policy. To understand how stories are selected and reviewed, read our about page .
For the complete original report, visit The Mainichi (English) . Have a tip or correction? Contact the editor .
Category: News ·
Published: October 6, 2026 ·
Source: The Mainichi (English) ·
Reading time: 1 min
Frequently asked about this story
What is this story about? A securities company has reported a potential data leak. The breach may have exposed information on a large number of customers. Details about the affected individuals are limited, but it is known…
When was this published? This article was first published on October 6, 2026 by The Mainichi (English) and curated for The Tokyo readers.
Who reported this story? This story was reported by The Mainichi (English). To learn more about how The Tokyo selects and reviews stories, see our editorial standards .
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