Blocking the Source of Payment Fraud (Smishing) Text Messages

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By Global Team

The Ministry of Science and ICT and the Korea Internet & Security Agency (KISA) have commenced a pilot operation of the ‘Malicious Text Pre-Block Service (X-ray)’ from 9 a.m. on April 9. This system aims to detect and block malicious content before the text is sent, addressing the fact that most text frauds occur after the victim receives the message.

Previously, text-based payment scams or phishing texts could only be addressed upon receiving reports from recipients. Once a report was filed, KISA would block the sender’s number and URL and provide guidance on preventing malware infections. However, secondary damages, such as sensitive information leaks and financial losses from already sent texts, were frequent.

The newly implemented system analyzes the content of text messages received by the reseller using the X-ray system. If any malicious elements are detected, the transmission is blocked entirely, allowing only messages verified as safe to be sent. This pilot operation is initially applied by the text reseller SMT&T Co., Ltd., with plans to expand to the private sector in the future.

User requests text sending to reseller; reseller checks for phishing and only sends safe texts
User requests text sending to reseller; reseller checks for phishing and only sends safe texts

This system is developed based on the analysis techniques and data accumulated through KISA’s ‘Text Payment Fraud Confirmation Service’. The Ministry of Science and ICT aims to create a more efficient digital fraud prevention model through collaboration with private enterprises.

Choi Woo-hyuk, Director of Information Security Network Policy at the Ministry, stated that the pre-blocking system marks a turning point in preventing digital crimes jointly by the government and private sector. He emphasized their commitment to reducing public anxiety about phishing and protecting public safety.

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