Nikkei: malware from an email attachment leaked data of 12,514 staff and others

1. 2020-05-08

   A group employee's PC was infected by malware in an email attachment. The malware was new, so the detection tools in place were slow to catch it. [1] [2]

2. 2020-05-12

   Public disclosure. [1]

Names, departments and email addresses of 12,514 people, including executives, staff, former staff, temporary and part-time workers and contractors of Nikkei and some group companies and bodies, leaked. Reader and customer data and reporting material were not included. [1] [2]

The unauthorized transfers were blocked, and the systems that produce the newspaper and digital edition were not affected. Staff were warned about emails pretending to come from people they know. [1] [2]