CSAIS
CriticalEarly warningData breachSouth korea · Indonesian

Korea Selatan selidiki serangan siber terhadap bank besar usai gelombang kebocoran data

First seen 4 Oct, 14:58 WIBLatest 14 Oct12 articles · 7 publishers
victim: bank korea selatanVerify evidence
85
Confidence index · preliminarycomputed by the pipeline (V0.7)high
Corroborated by distinct domains
Independent sources
Victim identified
Full text available
Clustering consistency
Status and preventive steps
Early warningMachine output from news coverage; not verified by the public or institutions
Preventive steps
  • Banks never ask for PINs or OTPs; call the official number on the back of your card.
  • Change passwords on affected accounts and turn on two-step verification.
  • Be wary of messages quoting your personal data; leaks are often followed by convincing scams.
Literacy audienceBank customers and e-wallet usersTelegram users in IndonesiaHomemakers
Literacy topics
  1. Preventing takeover of social media and messaging accounts
  2. Turning on two-step verification
  3. Protecting personal data, OTPs, and PINs

Report toKontak OJK 157Patroli Siber Polri

Extracted claims

Victimconfidence 0.90
Bank Korea Selatan
Actornot found
not identified
Attack typeconfidence 0.90
Data breach4 differing values across articles; review needed.
Event datenot found
not identified
LocationSouth korea
Target groupBank customers
Status
  • D1 Machinehigh trust
Conclusion
  • D1 MachineHappened

Source chronology

12 articles, by publication time

4 October 20261 articles

5 October 20262 articles

  1. 14:19 WIB+23 hfull text hashed
    5 Bank Korea Selatan Diserang Agen AI, Data Ribuan Nasabah Bocorinfobanknews.comBank Korea Selatan

6 October 20262 articles

Show all 12 articlesCollapse

6 October 2026 · continued2 articles

8 October 20262 articles

9 October 20263 articles

  1. 09:28 WIB+114 h
    Pengembang China Tutup Kode Sumber ARTEX AI Usai Peretasan Bank Korea Selataninternasional.kontan.co.idBank Korea Selatan
  2. 19:05 WIB+124 hfull text hashed
    Ransomware dan Phishing Masih Hantui Perbankan, AI Bikin Serangan Makin Masifinfobanknews.comBank Korea Selatan

13 October 20261 articles

14 October 20261 articles

Relations between articles
45 pairs likely independent

Evidence

Hashes prepared10full text hashed 3
first evidence_uid149761ea17608b1e0378eae3
10 of 10 evidence records are in Merkle batches

Flow comparison D1–D4

each flow's preventive output; this is where they differ · D1 changed 9 times · since 5 Oct
D1Machine16 OctD2Public surveynone yetHelp reviewD3Institutionnone yetD4Official recordnone yet
Literacy audienceBank customers and e-wallet usersTelegram users in IndonesiaHomemakers–––
Literacy topics
  1. 1.Preventing takeover of social media and messaging accounts
  2. 2.Turning on two-step verification
  3. 3.Protecting personal data, OTPs, and PINs
–––
Preventive steps
  • Banks never ask for PINs or OTPs; call the official number on the back of your card.
  • Change passwords on affected accounts and turn on two-step verification.
  • Be wary of messages quoting your personal data; leaks are often followed by convincing scams.
Report to Kontak OJK 157, Patroli Siber Polri
–––
Institution's reason––––

Columns D2 to D4 fill in once the public survey and institution statements are running.Summary across incidents