LCSI website hack, possible member data leak
Add to my breach checkMade public
What leaked9
Replaceable
- Password
Hard to replace
- Mobile number
- Home or delivery address
- Email address
- Other profile data
- Username
Permanent
- Date of birth
- Purchase or order history
- Full name
- Passwordencrypted password
- Mobile numbermobile or other phone number
- Purchase or order historytest applications and use, test-paper delivery details
- Other profile datacorporate members: company name, business registration number, company address and phone
To-dos7 · about 2 h in all
- Change the leaked password everywhere you reused itStops: account takeover
- Know the scam pattern: calls and texts that cite these leaked detailsLimits harm from: scam calls, phishing messages
- Register as an exposed person with the FSSLimits harm from: scam calls (opens in a new tab)
- Block new loans and cards in your nameLimits harm from: scam calls (opens in a new tab)
- Turn on two-step sign-in for email and bankingLimits harm from: account takeover
- This weekUse an authenticator app or passkey instead of SMS codesLimits harm from: account takeover
- When convenientRemove your address and phone from public profiles and tighten SNS privacyLimits harm from: visits or contact at home
What happened next7 events
- Undetected 2 events2 days · Back to latest
- Response 5 eventsNo individual notice on record · show events
- RemedyNone on record
- PenaltyNone on record
- DisputesNone on record
Undetected: 2 events
Back to latest- Found an outside intrusion (hacking) into its website
- Intrusion began
- Company
- LCSI
- When it happened
- –
- Company detected it
- Made public
- Notice
- Possible leak
- Affected
- unknown; individual and corporate members of the LCSI website · possible leak; company notice
How the facts developed
- Company notice: through a website flaw, the member database could be reached from outside from October 21, 2026 to October 23, 2026; leak not ruled out
Sources
- 림스연구소 company notice (opens in a new tab)checked November 6, 2026
- 데일리시큐 press (opens in a new tab)checked November 6, 2026