Eisai: an overseas employee account was misused and information on business partner contacts on the group cloud platform may have leaked

1. 2023-04-28

   In Japan time, an outsider using the account of an employee of an overseas group company accessed part of the information on the group cloud platform without authorization. It immediately blocked the access and strengthened network monitoring. [1] [2]

2. 2023-05-19

   It announced the case. It reported to the Personal Information Protection Commission and responded in line with each country's regulations. It set up a dedicated contact desk. [1] [2]

The people who may be affected are business partner contacts registered for work purposes from May 2018 to April 2023 in Microsoft products or the identity management system managed by the group (Teams project invitees, SharePoint access holders, Microsoft 365 group members and registrants of the identity system). About 11,000 records. Only names (where registered) and business email addresses may have leaked, and data on general consumers is not included. [1] [2]