According to a report by the Japanese National Police Agency, there was a huge surge in targeted cyber attacks in Japan in 2015:

The National Police Agency said it recorded 1,472 attacks from January to June, NHK news agency reported.

The agency monitors such attacks in coordination with more than 6,900 defence and nuclear-related firms and others, which are the main targets.

In targeted attacks, emails carrying computer viruses are sent to companies and government offices in a bid to steal classified information. Typically, the virus is hidden in an attached file sent with the e-mail.

The agency said cases in which a Microsoft Word document was used to automatically download an illicit programme accounted for 64 percent of all incidents involving attached files. That’s up from two percent last year.