SEOUL — LG Uplus and Woori Bank are joining forces to tackle voice phishing earlier in the scam process, connecting telecommunications data with banking fraud detection in real time.
The new “ixi-O Voice Phishing Financial Safety” service uses LG Uplus’ AI-powered ixi-O call app to identify calls that may be linked to voice phishing. When a suspicious call is detected, relevant risk information is transmitted to Woori Bank, allowing the bank to intensify monitoring of the customer’s transactions.
The approach is designed to catch warning signs before a fraudulent transfer occurs.
Traditional financial-sector defenses have largely focused on transaction activity, meaning banks may only see a clear warning once suspicious financial behavior begins. The new system adds information from the communication stage, including whether a customer has interacted with a suspected phishing number, whether a malicious app may be present on the device, or whether an AI-manipulated voice is involved.
If the system detects a suspicious transaction following a risky call, Woori Bank can increase its monitoring and take protective measures under its internal procedures, such as requesting additional identity verification or alerting the customer.
The partnership follows an agreement signed by LG Uplus and Woori Bank in August 2025. The companies subsequently shared information about emerging fraud techniques and conducted pilot operations and technical testing before establishing the real-time connection.
The timing is significant as South Korea’s financial sector faces heightened cybersecurity concerns following a series of recent data breaches. Authorities have warned that exposed personal information could potentially be exploited in follow-up scams, including voice phishing and smishing.
LG Uplus said it plans to expand the service to additional financial institutions. The company is also considering a feature that could alert a guardian registered in advance when a high-risk call is detected.
The broader shift is clear: instead of waiting for suspicious money transfers to appear, telecom and financial companies are trying to identify the danger while the scam is still unfolding.
And as AI-generated voices become increasingly difficult to distinguish from genuine calls, the race is now moving to an earlier point in the fraud chain — before a victim ever sends the money.
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