You can check the reported mobile phone and account numbers related to fraud damage on the National Police Agency's cyber safety guard site.

- Website: https://www.police.go.kr/www/security/cyber/cyber04.jsp

- How to look up: Type one of three phone numbers, account numbers, and email addresses in the search box and click Look Up to see the numbers submitted to the cybercrime reporting system at least three times in the last three months.

5 Principles of cyber fraud prevention

1. Use a credit card as much as possible when trading on the Internet.

2. Use reliable shopping malls, etc.

3. Pay attention to even large open markets, such as checking business information.

4. Be careful of those who offer direct transactions with extremely low prices.

5. In the case of direct transactions, you should meet in person as much as possible to receive the goods.