External Security Evaluation
January 21,2026
KDDI Awarded the Highest Two-Star Rating in the "Cyber Index Corporate Survey 2025" by Information Technology Federation of Japan
KDDI has been awarded the highest two-star rating in the Cyber Index Corporate Survey 2025*1, conducted by the Information Technology Federation of Japan*2, in recognition of its strong commitment to cybersecurity initiatives and its high level of information disclosure.
This survey was conducted among the companies that comprise the Nikkei 500, with the aim of promoting the disclosure of information on cybersecurity measures taken by private-sector companies. In addition to evaluating publicly available information such as securities reports, the survey also incorporated non-public information obtained through questionnaires and other means. Companies that demonstrated excellent cybersecurity measures and information disclosure were given a star rating and commended.
This survey was conducted among the companies that comprise the Nikkei 500, with the aim of promoting the disclosure of information on cybersecurity measures taken by private-sector companies. In addition to evaluating publicly available information such as securities reports, the survey also incorporated non-public information obtained through questionnaires and other means. Companies that demonstrated excellent cybersecurity measures and information disclosure were given a star rating and commended.