https://pwnsy.com/tools/cyber-watch/south-korea/Sourced cyber incidents and official statements, from pwnsy Cyber Watch.enSun, 08 Nov 2026 00:00:00 +0000https://pwnsy.com/tools/cyber-watch/incidents/amadeus-airline-data-breach/8cc6de331900f74eWed, 04 Nov 2026 00:00:00 +0000Eight airlines in six countries confirmed customer data exposure through Amadeus in 2026, including Malaysia Airlines and Singapore Airlines. Dates, figures and sources.https://pwnsy.com/tools/cyber-watch/south-korea/#all3c56daa6dbf8f304Thu, 29 Oct 2026 00:00:00 +0000Asiana said booking-related customer information was exposed through Amadeus and that payment data, held on a separate system, was not affected. Sources: https://www.visaverge.com/travel/amadeus-cyberattack-exposes-passenger-data-at-four-asian-carriers/https://www.boho.or.kr/kr/bbs/list.do?menuNo=205024&bbsId=B0000342d5e0181530c78db0Thu, 22 Oct 2026 00:00:00 +0000KISA raised the internet intrusion alert level from attention to caution.https://pwnsy.com/tools/cyber-watch/south-korea/#allc1d8e8dbb225f54cTue, 20 Oct 2026 00:00:00 +0000Korean Air said Amadeus notified it on 20 October that customer data including reservation numbers may have leaked, with no intrusion into its own systems. Sources: https://www.visaverge.com/travel/amadeus-cyberattack-exposes-passenger-data-at-four-asian-carriers/https://pwnsy.com/tools/cyber-watch/south-korea/#allf5be1982d3111359Mon, 05 Oct 2026 00:00:00 +0000Officials confirmed a data breach at Shinhan Bank, one of several bank incidents that led the Financial Services Commission to hold an emergency meeting and order on-site checks. Sources: https://www.bleepingcomputer.com/news/security/south-korea-probes-bank-breaches-amid-suspected-ai-powered-attacks/https://www.bleepingcomputer.com/news/security/south-korea-fines-telco-giant-kt-39-million-for-customer-data-breach/b38ff59201f964a2Thu, 30 Jul 2026 00:00:00 +0000PIPC fined KT KRW 53.979 billion over the femtocell intrusion.https://pwnsy.com/tools/cyber-watch/south-korea/#allad5c889bf0aa7262Wed, 22 Jul 2026 00:00:00 +0000The ministry disclosed that a breach of the academy's online education server, found in February, exposed IDs, names and emails of at least 6,000 people including diplomats abroad. Sources: https://www.bleepingcomputer.com/news/security/south-korea-discloses-data-breach-impacting-diplomats-worldwide/https://www.bleepingcomputer.com/news/security/south-korea-hits-coupang-with-record-409-million-fine-over-data-breach/7ea367a85ad961f3Thu, 11 Jun 2026 00:00:00 +0000PIPC fined Coupang KRW 624.6 billion over the leak of about 37.55 million people's data.https://pwnsy.com/tools/cyber-watch/south-korea/#allb779de274177d584Sat, 28 Feb 2026 00:00:00 +0000About $4.8 million in seized crypto tokens was moved out after an NTS press release showed an unredacted wallet recovery phrase; the release was then removed. Sources: https://www.bleepingcomputer.com/news/security/48m-in-crypto-stolen-after-korean-tax-agency-exposes-wallet-seed/https://pwnsy.com/tools/cyber-watch/south-korea/#all58aa173b5209c1bbWed, 14 Jan 2026 00:00:00 +0000Kyowon confirmed a ransomware attack with an external data leak and reported it to KISA; Korean media put possible exposure at 9.6 million accounts. Sources: https://www.bleepingcomputer.com/news/security/south-korean-giant-kyowon-confirms-data-theft-in-ransomware-attack/