#Japan #Cybersecurity #Tokyo #BuySell Technologies #Nippon CSIRT

BuySell Technologies Joins the Nippon CSIRT Association

BuySell Technologies, the company behind the comprehensive reuse service "BuySell," has made a significant move to bolster its cybersecurity framework by joining the Nippon CSIRT Association (NCA) as of October 2025. This affiliation marks a critical step in improving information security measures in an industry that handles a vast amount of personal data due to the nature of buying and selling second-hand goods.

Background of the Membership

As BuySell Technologies continues to experience rapid growth within the reuse business sector, so too does its responsibility regarding data security. The resale industry is bound by the Antique Business Law, which mandates confirmation of customers' identification documents and retention of records for three years. This law necessitates handling sensitive personal information regularly, underscoring the importance of cybersecurity.

To manage the increasing volume and complexity of information as a result of their business expansion and aggressive M&A strategies, BuySell Technologies recognized the urgent need for a robust security framework. Given the rise in sophisticated cyberattacks, the protection and appropriate management of valuable information assets have never been more crucial.

In October 2024, the company took proactive measures by establishing a cross-group information security emergency response team (CSIRT). This initiative aimed to enhance incident response capabilities and strengthen the company's overall security posture.

Now, with the approval of its membership in the NCA, BuySell Technologies is set to further solidify its security protocols and enhance collaborative efforts with other organizations for rapid information sharing. The company is dedicated to advancing its cybersecurity infrastructure and improving its incident response capabilities while actively collaborating with member organizations to share threat intelligence.

Details of Membership in the Nippon CSIRT Association

• - Formal Name: Aegis BuySell CSIRT
• - Affiliated Organization: BuySell Technologies Co., Ltd.
• - Membership Date: October 2025
• - URL: NCA Member Information

About the Nippon CSIRT Association

The Nippon CSIRT Association, or NCA, is an organization that promotes information sharing and collaboration on cybersecurity matters. Currently, the association boasts over 600 participating companies and organizations in Japan. Through collaboration among CSIRTs (Computer Security Incident Response Teams), the NCA works to minimize the impact of cyber incidents, share early warning information, and conduct joint exercises to prepare for serious cybersecurity incidents.

For more information, visit their official website: NCA Official Site

Company Overview

Founded with the mission of "Connecting valuable things across time and people," BuySell Technologies operates the comprehensive reuse business known as BuySell. The company specializes in buying and selling items that may be neglected in homes, such as kimono, stamps, and luxury brands, and aims to contribute to a circular economy. Utilizing proprietary technology, they streamline operations and enhance data utilization, while actively pursuing M&A opportunities in the reuse sector. With an extensive secondary distribution network both domestically and internationally, BuySell is a leading player in the industry with over 400 stores and 400,000 estimation requests annually.

• - Company Name: BuySell Technologies Co., Ltd.
• - CEO: Kohei Iwata (Chairman and Representative Director), Kosuke Tokushige (President and CEO)
• - Head Office Location: 4-28-8 Yotsuya, Shinjuku-ku, Tokyo 160-0004, Japan
• - Business Activities: Reuse of kimonos, branded items, etc.
• - Corporate Website: BuySell Technologies
• - Service Website: BuySell KAITORI