MOIN BizPlus leak of documents customers submitted, such as ID and bankbook copies
Add to my breach checkMade public
What leaked16
Hard to replace
- ID card image
- Driver's licence number
- Income, balances, loans, credit or other financial details
- ID document number
- Passport number
- Bank account number
- Mobile number
- Home or delivery address
- Email address
- Other profile data
Permanent
- Resident registration number
- Date of birth
- Names of family members
- Purchase or order history
- Full name
- Gender
- ID card imagecopies of ID documents with photo: resident registration card, driver's licence, passport, alien registration card, domestic residence report card, youth ID card or Japanese residence card, depending on what each customer submitted
- Resident registration numberon resident registration cards, driver's licences, youth ID cards, some passports, resident register extracts, family relation certificates and shareholder registers
- Driver's licence numberlicence number and the card's serial code
- Income, balances, loans, credit or other financial detailsshareholder registers: share type, number of shares, stake and acquisition date
- ID document numberalien registration number, domestic residence report number or Japanese residence card number
- Bank account numberbankbook copies · holder, bank, branch, account number; counterparties' account numbers on invoices and contracts
- Names of family membersnames, resident registration numbers and relationship of household members and family (parents, spouse, children) on resident register extracts and family relation certificates
- Mobile numbercounterparties' phone numbers on remittance documents · type not stated
- Home or delivery addresson ID documents other than passports, resident register extracts (with address history) and shareholder registers; counterparties' addresses on remittance documents
- Purchase or order historytransaction amounts, items, details and dates on invoices, contracts and tuition bills
- Email addresscounterparties' email addresses on remittance documents
- Other profile datanationality, residence status and expiry dates on ID documents; business registration details · company name, registration numbers, business address
To-dos10 · about 1 h 30 min in all
- Block new loans and cards in your nameStops: loans or cards in your name · Limits harm from: scam calls, applications with your ID (opens in a new tab)
- Block non-face-to-face account opening in your nameStops: bank account in your name · Limits harm from: scam calls (opens in a new tab)
- Register as an exposed person with the FSSLimits harm from: scam calls, loans or cards in your name, bank account in your name, applications with your ID (opens in a new tab)
- Know the scam pattern: calls and texts that cite these leaked detailsLimits harm from: scam calls, phishing messages
- Check your credit records and block status on credit4uHelps you notice: loans or cards in your name (opens in a new tab)
5 more
- Block new mobile lines in your name with MsaferStops: phone line in your name (opens in a new tab)
- Report the lost resident ID card on Gov24Limits harm from: bank account in your name, phone line in your name (opens in a new tab)
- Check every phone line in your name on MsaferHelps you notice: phone line in your name (opens in a new tab)
- Turn on two-step sign-in for email and bankingLimits harm from: recovery takeover
- Remove your address and phone from public profiles and tighten SNS privacyLimits harm from: visits or contact at home
- Company
- MOIN BizPlus
- When it happened
- –
- Company detected it
- Made public
- Notice
- Leak confirmed
- Affected
- unknown; customers whose documents were submitted to MOIN up to about 07:24 KST on October 19, 2023, and the shareholders, counterparties and family members named in those documents · the company notice gives no count
How the facts developed
- Company notice: an outside attacker took document files that customers had submitted, at about 02:30 KST on October 23, 2026; MOIN found it at about 15:00 KST on October 29, 2026
Outcome
MOIN reported the leak to the Personal Information Protection Commission (through KISA) and to the Financial Supervisory Service (company notice). No decision.
Sources
- 모인 company notice (opens in a new tab)checked November 4, 2026