Business SaaS and e-mail
LINE Login
LINE Login (run by LY Corporation) was hit in 1 recorded cybersecurity incident. The latest was disclosed on 2020-09-17.
About the service
- Website
- https://developers.line.biz/ja/services/line-login/
- Run by
- LY Corporationsince 2023-10-01
- Formerly run by
- Z Intermediate Global Corporation2021-03-01 to 2023-10-01
- A Holdings Corporationuntil 2021-03-01
- Part of
- LINE
- Category
- Business SaaS and e-mail
- For
- People and businesses
Incident history
Disclosed 2020-09-17Updated 2020-09-17Tokyo[Resolved][Severity: Major][Breached][Major]
LINE: a password list attack on LINE Login confirmed that about 74,000 IDs and passwords were valid[Credential abuse][Data leak]Leaked 74KOrganizations 1
Other incidents of the operator (11)
Disclosed 2026-10-09Updated 2026-10-14Aomori, Hiroshima, Osaka, Shizuoka, Tokyo[Investigating][Severity: Critical]
Commune: unauthorized access to the Commune community platform[Intrusion][Data leak]Leaked 307KOrganizations 12Disclosed 2024-11-29Updated 2024-12-12Tokyo[Resolved][Severity: Critical]
LY Corp: a LINE Album defect showed thumbnails of other users' album images, affecting over 120,000 users in Japan[Misconfiguration][Data leak]Leaked 135KOrganizations 1Disclosed 2024-08-26Updated 2024-09-03 08:05Tokyo[Resolved][Severity: Major]
LY Corp: credential stuffing on LINE Business IDs hijacked 688 official accounts, exposing friends' chats and other data[Credential abuse][Data leak][Fraud]Organizations 1Disclosed 2024-08-05Updated 2024-08-14 08:05Tokyo[Resolved][Severity: Major]
LY Corp: a defect in Yahoo! JAPAN ID SMS login may have let third parties read Yahoo! Mail[Misconfiguration][Data leak]Organizations 1Disclosed 2024-02-14Updated 2024-02-21Tokyo[Contained][Severity: Major]
LY Corporation: contractor accounts misused; 57,611 staff-related records may have leaked[Credential abuse][Data leak]Leaked 57.6KOrganizations 1Disclosed 2023-11-27Updated 2024-04-23 08:05Tokyo[Contained][Severity: Critical]
LY Corporation: contractor PC malware led to access to former LINE systems, and up to about 520,000 records leaked[Malware][Intrusion][Data leak]Leaked 519.5KOrganizations 1Disclosed 2021-07-21Updated 2021-07-28 08:00Tokyo[Resolved][Severity: Major]
LINE: all streamed videos of its ticketed live service LINE Face2Face were open to unauthorized access, and online handshake event videos were re-uploaded to a video sharing site[Web app exploit][Data leak]Leaked 4.1KOrganizations 1Disclosed 2021-02-09Updated 2021-02-15 08:00Tokyo[Resolved][Severity: Major]
LINE: a password list attack hit the login page of its inquiry form, and phone numbers, user identifiers and mail addresses could be obtained for 3,035 accounts[Credential abuse][Data leak]Leaked 3KOrganizations 1Disclosed 2020-12-03Updated 2020-12-08 08:00Tokyo[Resolved][Severity: Moderate]
LINE: double-stuck address labels on membership gifts for Disney x LINE exposed the names and addresses of 2,608 customers to other customers[Misdelivery][Data leak]Leaked 2.6KOrganizations 1Disclosed 2020-05-24Updated 2020-05-27 09:00Tokyo[Resolved][Severity: Major]
LINE: a mass login attempt on livedoor ID got into some accounts[Credential abuse]Organizations 1Disclosed 2020-02-26Updated 2020-03-01 19:30Tokyo[Investigating][Severity: Major]
LINE: 4,225 accounts logged into by others and used to post spam and phishing links[Credential abuse][Phishing]Leaked 4.2KOrganizations 1