Confirmed breach

Korea Digital Exchange data breach

en.sedaily reported a data breach at Korea Digital Exchange (South Korea) on 12 November 2026, and it has been confirmed. It affected 40 customers.

People affected: 40customers
Reported: 12 November 2026News report

What was exposed 5

Names
Resident registration numbers
Contact details
Corporate registration numbers
Tax-related documents

How it happened

How: Hacking An outside attacker gained unauthorized access on the 1st through Daou Tech source
Through: Daou Tech an outside groupware service used by the exchange was attacked. Korea Digital Exchange, which operates Flybit, confirmed the leak and posted an apology on the 5th, financial industry sources said on the 12th. An outside attacker gained unauthorized access on the 1st through Daou Tech, the operator of the in-house groupware service used by Korea Digital Exchange. source
Way in: Daou Tech An outside attacker gained unauthorized access on the 1st through Daou Tech, the operator of the in-house groupware service used by Korea Digital Exchange source

Sources 1

News reporten.sedailyCrypto Exchange Flybit Hacked, Data of 40 Customers Leaked12 November 2026 · 40 customers
Confirmed by Korea Digital Exchange: Korea Digital Exchange, which operates Flybit, confirmed the leak and posted an apology on the 5th

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 Korea Digital Exchange had your data

Look for Korea Digital Exchange’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 Korea Digital Exchange, 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 Korea Digital Exchange breach

Was Korea Digital Exchange hacked?

en.sedaily reported a data breach at Korea Digital Exchange (South Korea) on 12 November 2026, and it has been confirmed. It affected 40 customers. How it happened, by the sources: hacking, through Daou Tech.

What data was exposed in the Korea Digital Exchange breach?

Names, Resident registration numbers, Contact details, Corporate registration numbers and Tax-related documents, 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 Korea Digital Exchange data breach settlement?

No settlement open for claims is on record for Korea Digital Exchange as of 15 November 2026. Every open settlement is listed with its deadline.

Is a letter, email or text about the Korea Digital Exchange 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 Korea Digital Exchange’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.