Reported breach

Rakuten Securities data breach

Country being checked · 楽天証券

tokyonewsmedia reported a data breach at Rakuten Securities on 1 November 2026. It affected 362 records.

One of 2 organisations whose data was taken through NTT Data. The NTT Data breach →

People affected: 362records
Reported: 1 November 2026News report

What was exposed 4

Social Security numbers
Names
Addresses
Corporate bond purchase information

How it happened

How: Hacking Unauthorized access to contractor system received source
Our translation from Japanese
委託先システムへの不正アクセス受け
Through: NTT Data Unauthorized access to NTT Data contractor system received source · 2 organisations hit through NTT Data →
Our translation from Japanese
NTTデータ委託先システムへの不正アクセス受け
Way in: NTT Data Unauthorized access to NTT Data contractor system received source
Our translation from Japanese
NTTデータ委託先システムへの不正アクセス受け

Sources 1

News reporttokyonewsmedia楽天証券、社債購入者延べ362件の情報漏えいか NTTデータ委託先 ...1 November 2026 · 362 records

News reports are read by an AI model; every fact taken from an article was checked word for word against it, and anything it could not find was dropped. · Corrections and changes

If Rakuten Securities had your data

Look for Rakuten Securities’s own notice or letter: it should say what of yours was involved. Keep it.
An ID number cannot be changed, so lock it: a credit freeze or fraud alert in the US, a credit warning (kreditadvarsel) on borger.dk in Denmark, Cifas protective registration in the UK.
Expect scams that use your details: calls, texts or emails pretending to be Rakuten Securities, your bank or the police. Never give codes or passwords, never approve a sign-in you did not start, never move money.

From the data breach tracker: official notices, breach databases and the news, every fact with its source. Open data (CC BY 4.0) · How the tracker works · Official registers · Corrections and changes · Found a mistake? Tell us and we correct it.