People search Lotte Card data breach timeline because the brand sits on billions of accounts, credentials, and cloud workloads. BreachHistory indexes 1 Lotte Card-linked incident (1 company-confirmed), with headline counts up to 3M+ in catalog rows. This page maps every attested event through 2026 with internal links to canonical records.
Why Lotte Card breach history matters
Lotte Card operates in Finance (South Korea). Across indexed rows, recurring themes include zero-day exploitation and malware. Understanding the chronological pattern helps security teams, customers, and regulators separate confirmed disclosures from forum marketing.
Full timeline through 2026
2025 — ~3M customers; later PIPC fine ₩9.62B
Verified breach. Lotte Card, South Korea’s fifth-largest card issuer, confirmed that hackers accessed customer systems in mid-August 2025, exposing personal data for about 3 million customers. The Record and Korean outlets reported identification numbers, internal IDs, and contact information among the stolen fields, with sensitive card numbers, expiry dates, and verification codes also compromised for thousands of customers. Attackers reportedly exploited an unpatched vulnerability on a little-used overseas payments server (fix av Exposed categories include Customer IDs/contact data; card numbers/CVV/expiry for a subset (per company/press). BreachHistory cites approximately 3M+ affected records in this row. See the lotte-card-hack2025 and canonical BreachHistory entry.
Patterns and analysis
- Zero-day exploitation and malware — appears across multiple Lotte Card catalog entries; prioritize controls that address this class of failure.
- Record-count hygiene — BreachHistory indexes actor-cited figures separately from company-confirmed totals; read each row's technicalWriteup before treating counts as fact.
- 2026 monitoring — New disclosures roll into this timeline as they are verified or labeled unverified per catalog policy.
What to do if you may be affected
- Step 1: Enable phishing-resistant MFA on every account tied to this brand.
- Step 2: Use unique passwords and a password manager—breach rows often involve credential reuse.
- Step 3: Monitor official company breach notices and regulator filings, not dark-web downloads.
- Step 4: Bookmark the Lotte Card company page for new 2026+ disclosures.
Canonical BreachHistory hub
Explore every indexed row: breachhistory.com/lotte-card · Latest: lotte-card-hack2025.
Sources: BreachHistory catalog (1 row for Lotte Card), company and regulator disclosures cited in individual breach records.