Takamiya Co., Ltd.

Takamiya Co., Ltd., headquartered in Japan, operates as a corporate group with a multinational structure that includes a branch in Vietnam and multiple subsidiaries. The organization's operational scale and the nature of its core business activities are not detailed in the provided incident overview, though its handling of customer information and employee data indicates engagement with processes involving personal data. A defining event in the company's recent history occurred on December 15, 2022, when it suffered a significant cybersecurity incident involving unauthorized server access and a ransomware attack orchestrated by the LockBit criminal group. The intrusion originated from the company's Vietnam branch, leading to the encryption of files and the potential exposure of sensitive data. The compromised information encompassed personal data belonging to customers and employee details across the entire corporate group, though a subsequent assessment confirmed that three specific subsidiaries experienced no leakage of personal data.

Upon detecting system disruptions, the organization promptly established an internal response team to manage the crisis and initiated technical recovery efforts. External cybersecurity experts were engaged to assist with the investigation and remediation. The company formally reported the incident to relevant regulatory authorities and law enforcement agencies, fulfilling its compliance obligations. Following the attack, the perpetrators listed Takamiya on a public leak site, which triggered ongoing dark web monitoring to track any potential data dissemination. Comprehensive forensic investigations were launched to ascertain the full scope of impacted data and to understand the precise intrusion methods employed by the attackers. This incident underscores the group's exposure to sophisticated cyber threats and its reliance on structured incident response protocols, including external collaboration and regulatory notification, while highlighting the interconnected data environment across its Vietnam branch and subsidiary network.