Confirmed breach

Hanyang Securities data breach

finance.biggo reported a data breach at Hanyang Securities (South Korea) on 2 November 2026, and it has been confirmed. It affected 31 records.

People affected: 31records
Reported: 2 November 2026News report

What was exposed 8

Driver’s license numbers
Financial account and card details
Email addresses
Dates of birth
Names
Addresses
Contact details
Resident registration numbers

How it happened

How: Hacking abnormal access to an external groupware solution source
Way in: external groupware solution leaked through abnormal access to an external groupware solution source

Sources 1

News reportfinance.biggoSouth Korea's Hanyang Securities Reports Customer Data Leak via Groupware Hack, Including 3 Cases With Resident Registration Numbers2 November 2026 · 31 records
Confirmed by Hanyang Securities: Hanyang Securities has confirmed a data breach in which customer and employee personal information was leaked through abnormal access to an external groupware solution

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 Hanyang Securities had your data

Look for Hanyang Securities’s own notice or letter: it should say what of yours was involved. Keep it.
Call your bank on the number printed on your card (never one from a message), check recent payments and ask for a new card.
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.
Your email address is out: expect convincing phishing. Open Hanyang Securities by typing its address yourself, never through a link in an email or text, and check the sender before you reply.
Your home address is out: be wary of letters, parcels or visitors that mention Hanyang Securities, and of texts asking for a “delivery fee”.
Expect scams that use your details: calls, texts or emails pretending to be Hanyang Securities, your bank or the police. Never give codes or passwords, never approve a sign-in you did not start, never move money.

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Questions about the Hanyang Securities breach

Was Hanyang Securities hacked?

finance.biggo reported a data breach at Hanyang Securities (South Korea) on 2 November 2026, and it has been confirmed. It affected 31 records. How it happened, by the sources: hacking, through external groupware solution.

What data was exposed in the Hanyang Securities breach?

Driver’s license numbers, Financial account and card details, Email addresses, Dates of birth, Names, Addresses, Contact details and Resident registration numbers, by the notices and reports on this page.

How do I know if I was affected?

Organisations normally tell the people whose data was involved, by letter or email, and that notice says what of yours was in it. We cannot look up individual people. If you got a notice, check that it is real, then follow the steps on this page.

Is there a Hanyang Securities data breach settlement?

No settlement open for claims is on record for Hanyang Securities as of 15 November 2026. Every open settlement is listed with its deadline.

Is a letter, email or text about the Hanyang Securities breach real or a scam?

A real notice names the breach, says what data was involved and never asks for a password, a code or a payment. Criminals often send fake notices after a breach is in the news. Do not use links or phone numbers in the message: go to Hanyang Securities’s own site, or check the letter here.

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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 · Accuracy audit · For journalists · Found a mistake? Tell us and we correct it.