Telecom and ISPs
Yahoo! Mail
Yahoo! Mail (run by LY Corporation) was hit in 1 recorded cybersecurity incident. The latest was disclosed on 2024-08-05.
About the service
- Website
- https://mail.yahoo.co.jp/
- Run by
- Category
- Telecom and ISPs
- For
- People
Incident history
Disclosed 2024-08-05Updated 2024-08-14 08:05Tokyo[Resolved][Severity: Major][Breached][Major]
LY Corp: a defect in Yahoo! JAPAN ID SMS login may have let third parties read Yahoo! Mail[Misconfiguration][Data leak]Organizations 1
Other incidents of the operator (5)
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 2024-02-14Updated 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 1