South Korea’s Financial Supervisory Service (FSS) and the card industry are strengthening defenses against voice-phishing schemes that make victims authorize credit-card payments themselves. Scammers impersonate financial-company employees, employers, loan providers or romantic partners and steer victims toward gift certificates, membership rights or proxy purchases that can quickly be converted into cash. Because victims enter their card details or complete identity verification, card companies often treat the transactions as legitimate and compensation is difficult. The revised joint fraud detection system will incorporate payment patterns and merchant characteristics associated with victim-authorized scams, while individual card companies’ stronger detection rules will be added to the shared framework. For customers aged 70 or older, suspicious purchases of highly convertible goods will undergo in-depth counseling before approval. Voice-phishing cases involving this age group rose from 777 in 2023 to 1,047 in 2024 and 1,493 in 2025, with the latest figure up 42.6% from the prior year. The FSS also plans broader investigations of illegal merchants involved in card kkang and fake sales, including checks on whether goods were delivered and transactions were conducted normally.