Mitsui Sumitomo Insurance, a Japanese multinational banking and financial services institution, completed the acquisition of a minority stake in Upstream Security, an automotive security firm that specializes in cyber security for automobiles. Financial terms were not disclosed. Through the development of products and services that utilize advanced technology and know-how, and the sophistication of insurance payments, which are obtained through this investment and business alliance, the company aim to improve the customer experience value with an eye on the social implementation of autonomous vehicles and will contribute to the realization of a safe and secure mobility society.