【資料】
◆2019 Data Breach Investigations Report Executive Summary (Verizon, 2019/05/08)
https://enterprise.verizon.com/resources/executivebriefs/2019-dbir-executive-brief.pdf
◆2019 Data Breach Investigations Report (Verizon, 2019/05/08)
https://enterprise.verizon.com/resources/reports/2019-data-breach-investigations-report.pdf