MediumData breachMonitoring· updated Nov 11
Nikkei Inc.
4 results
Nikkei Inc.
According to CyberInsider, French intellectual property software and services firm Questel confirmed a voice phishing attack led to unauthorized access to a Sales SharePoint environment in its Microsoft 365, and some stolen data has been published .
ST Unitas, operator of the Gongdangi exam-prep brands, announced on June 8, 2026 that some members' personal data leaked through unauthorized access to its operating system .
According to Security NEXT, on the evening of December 17, 2024, a prefectural high school in Saitama Prefecture uploaded a seminar video intended only for students but mistakenly set its visibility permissions to public .