AddressCode.jp

The Japanese service AddressCode.jp experienced a significant data security incident in early 2024. The breach involved the exposure of user information from its database which provides postal code and address mapping services. The incident occurred due to unauthorized access to the backend storage systems leading to the compromise of personal identifiers. The data was discovered being circulated on specialized dark web forums and through various OSINT monitoring channels. This event highlights vulnerabilities in regional directory services and the potential for targeted attacks against localized infrastructure providers in Japan.