情報セキュリティ対策は万全だったはずなのに・・・ | 国民のためのサイバーセキュリティサイト

This page presents a case where a company experienced customer information leakage despite implementing comprehensive security measures. The information manager had installed malware protection and firewalls, but data was leaked through an infected home computer or lost USB drive. The page emphasizes that perfect security doesn't exist and requires multi-faceted approaches: strict internal policies, access controls, and employee education. Response measures include filing police reports, investigating damage scope, and notifying stakeholders. Prevention requires developing security policies, continuous employee training, and regularly reviewing measures against evolving threats.