When there is a leak of personal or confidential information, such event necessitates an investigation of the facts and dealing with victims, regulators and public relations. It is important to keep in mind that in recent years, there is a global trend by legislators to regulate the protection of information which can be disclosed, such as the General Data Protection Regulation (GDPR) in the EU, the Cybersecurity Law of China and California Consumer Privacy Act (CCPA). AMT has vast experience in and knowledge of the regulation of information domain in Japan and abroad, supports clients dealing with various issues and assists in formulating measures to prevent the recurrence of such leakage.