Kesko

In early 2018 a data leak involving Kesko Oyj a Finnish retail holding company was identified affecting its Russian user base. The breach involved the exposure of personal information for approximately 65000 customers. The leaked data set included sensitive details such as full names mobile phone numbers email addresses and dates of birth. The incident appeared to involve a misconfiguration or unauthorized access to a specific database segment containing regional customer records rather than a full compromise of the central Finnish infrastructure.