# South Korean financial sector cybersecurity and fraud issues > Live situation record from CLSTR: https://clstr.news/situations/south-korean-financial-sector-cybersecurity-and-fraud-issues > Updated: 2026-10-18T05:00:00.000Z. Sources: 6. Developments: 2. South Korea is addressing significant vulnerabilities within its financial sector, involving both targeted cyberattacks and systemic operational failures. In early October 2026, the Ministry of Science and ICT and the Korea Internet & Security Agency (KISA) activated a 24-hour emergency response system following a series of hacking incidents. This response included increasing personnel at the Internet Incident Response Center and advising approximately 28,000 companies to conduct security inspections. Parallel to these hacking threats, the sector has struggled with frequent computer system failures and a surge in fraud. Data indicates that between 2022 and 2025, the industry averaged approximately one system failure per day. Additionally, voice phishing incidents rose sharply in 2025, with confirmed fraud cases at five major banks increasing by 101.7% compared to the previous year. Critics have pointed to lenient regulatory penalties and insufficient IT infrastructure investment as contributing factors to these ongoing security and reliability challenges. ## Timeline ### 2026-10-18: South Korean financial sector faces rising system failures and fraud South Korean financial institutions face rising system failures and a 101.7% surge in confirmed voice phishing cases, amid criticism of lenient regulatory sanctions for technical disruptions. 2 sources. https://clstr.news/cluster/south-korean-financial-sector-faces-rising-system-failures-and-fraud ### 2026-10-06: South Korea activates 24-hour emergency response following financial sector hacks South Korea has launched a 24-hour emergency cybersecurity response following financial sector hacks, while lawmakers debate the government's effectiveness during National Assembly audits. 4 sources. https://clstr.news/cluster/south-korea-activates-24-hour-emergency-response-following-financial-sector-hacks --- Cite as: South Korean financial sector cybersecurity and fraud issues. CLSTR, https://clstr.news/situations/south-korean-financial-sector-cybersecurity-and-fraud-issues