Credit Card Fraud Prevention in Korea — Complete Guide 2026

Credit card fraud can happen to anyone. In Korea, the most common types are unauthorized overseas transactions, phishing-based information theft, and lost/stolen card misuse. This guide covers Korean card companies' fraud protection systems, prevention settings, and what to do if you become a victim.

Common Types of Card Fraud

1. Unauthorized Overseas Transactions

The most common type. Card information leaked from foreign websites leads to charges you never made.

2. Phishing/Smishing Information Theft

Fake messages impersonating card companies or banks trick you into entering card details.

3. Lost/Stolen Card Usage

Physical card lost or stolen and used by someone else.

4. Card Skimming

Devices installed on ATMs or payment terminals copy your card information.

Immediate Steps When Fraud Is Detected

Step 1: Freeze Your Card Immediately

• Use the temporary freeze function in your card company's app
• Or call the 24/7 hotline

Card Company	Phone	App
Shinhan Card	1544-7000	Shinhan SOL Pay
KB Kookmin Card	1588-1688	KB Pay
Samsung Card	1588-8700	Samsung Card App
Hyundai Card	1577-6000	Hyundai Card App
Lotte Card	1588-8100	Lotte Card App

Step 2: File a Fraud Dispute

• Contact your card company's customer center
• File a fraud dispute claim within 60 days for full reimbursement
• The card company investigates after your report

Step 3: Gather Evidence

• Capture transaction history screenshots
• List all unauthorized transactions
• Prepare location proof for the time of the transaction (transit card records, etc.)

The 60-Day Dispute Rule

Korean card companies follow the principle of full reimbursement for fraud reported within 60 days of the unauthorized transaction.

Item	Detail
Reporting deadline	60 days from the fraud date
Coverage	Full amount for fraud without cardholder negligence
Exclusions	PIN disclosure, card transfer, family member usage
Processing time	Typically 2-4 weeks (longer for overseas transactions)

Important: After 60 days, reimbursement becomes much harder. Always enable real-time transaction alerts and catch suspicious charges quickly.

Prevention Settings

Block Overseas Payments

If you don't use your card abroad, block overseas payments entirely.

• Card app > Overseas Usage Settings > Block Overseas Payments
• Temporarily unblock only when traveling

Real-Time Transaction Alerts

Get instant notifications for every charge.

• Card app > Notification Settings > Real-time Transaction Alerts ON
• Choose KakaoTalk or SMS notifications

Transaction Limits

• Set appropriate per-transaction and daily limits
• Set lower limits specifically for overseas transactions

Online Payment Security

• Use Ansim Click (ISP) for secure authentication
• Use virtual card numbers for online shopping
• Regularly check which sites have your saved card information

Managing Card Information Securely

Never send card numbers, CVCs, or payment verification codes through messaging apps like iMessage.

When you need to share card details with family, create a password-protected memo on LOCK.PUB with an expiration time. The memo auto-deletes after use.

Emergency Contact Management

If you lose your card while traveling overseas, quick response is critical. Store your card company's international emergency numbers in advance.

Save your card company emergency contacts in a LOCK.PUB password-protected memo — accessible from any device even if your phone is lost.

Card Company	International Emergency
Shinhan Card	+82-2-6950-7000
KB Kookmin Card	+82-2-6300-7300
Samsung Card	+82-2-2000-8100
Hyundai Card	+82-2-3015-9000
Lotte Card	+82-2-2050-7700

Conclusion

Fast response is the key to minimizing credit card fraud damage. Enable real-time alerts, block overseas payments by default, and report suspicious transactions within 60 days. Manage card information and emergency contacts securely with LOCK.PUB.