Toss Bank Hacking Attempt Linked to Shinhan Bank Incident

Recently, some of the Internet Protocol (IP) addresses used in a series of hacking incidents targeting the financial sector attempted to access the servers of Toss Bank as early as January of this year. However, Toss Bank blocked these attempts, preventing any personal data breaches or actual damage.

On October 5, Kim Hyung-yeon, a lawmaker from the Justice Reform Party, revealed that two of the IP addresses used in the recent Shinhan Bank hacking had attempted to access Toss Bank's servers since January.

The IP addresses made three access attempts on January 24 and 11 attempts between July and August to connect to Toss Bank's internal servers. Toss Bank stated that it has a continuous blocking system in place, ensuring that there was no system breach or customer data leak.

Following confirmed data breaches at Shinhan, KB Kookmin, Hana, BNK Busan Bank, as well as Yeogaram, Welcome Savings Bank, and Hyundai Capital, the detection of similar IP attacks at an internet bank raises concerns that the attacks may have targeted the entire financial sector earlier than previously thought.

Financial authorities have instructed banks and credit card companies to complete emergency inspections by October 6, while securities, insurance, and savings banks have until October 8 to finish their assessments.