As digital transformation continues to advance rapidly across the globe, ICT has become indispensable to virtually every aspect of social and economic activity. At the same time, amid heightened geopolitical tensions, state-sponsored cyber activities, and the widespread adoption of advanced generative AI, cyber threats are growing in sophistication and complexity at an unprecedented pace and scale. Attacks targeting supply chains and incidents affecting critical infrastructure are now causing tangible harm to people’s daily lives and economic activities. These threats have already exceeded the capacity of any single company or organization to address on its own.

The situation is no different in Japan. While information and communications infrastructure serves as a foundation for economic growth, cyberattacks are increasing in both scale and sophistication, and their societal impact is becoming increasingly serious. In this context, cybersecurity is being recognized not merely as a cost, but as a management foundation that supports business continuity and sustainable growth.

Furthermore, the growing use of cloud services and IoT has increasingly blurred the boundaries between internal and external networks, thereby expanding the attack surface. While AI contributes to more advanced defense capabilities, it also enables the automation of cyberattacks and lowers the cost of carrying them out. These changes are further elevating cybersecurity from a purely “technical issue” to a “management issue” and an “organization-wide issue.”

Looking ahead, the field of cybersecurity is expected to make a significant shift from individually optimized measures to collectively optimized approaches. In other words, it will be essential not only for each organization to strengthen its own defenses, but also for the entire industry to identify and share threat intelligence and take proactive measures through “collaborative defense.”

As a central organization in this endeavor, ICT-ISAC will continue working to enhance security in the telecommunications and broadcasting sectors, while contributing to the safety and security of society as a whole through its expertise and activities. We respectfully ask for your continued understanding and cooperation.

Atsuhiro Goto
President
ICT-ISAC Japan

• ARTERIA Networks Corporation
• Asahi Net, Inc.
• BBIX, Inc.
• BIGLOBE Inc.
• Chubu Telecommunications Co., Inc.
• Cisco Systems G.K.
• COMSYS Holdings Corporation
• Cyber Defense Institute, Inc.
• EXEO Group, Inc.
• FFRI Security, Inc．
• Fuji Television Network, Inc.
• FUJITSU LIMITED
• Furukawa Network Solution Corp.
• Hitachi, Ltd.
• Internet Initiative Japan Inc.
• Internet Multifeed Co.
• Japan Broadcasting Corporation
• Japan Internet Xing Co., Ltd.
• Japan Registry Services Co., Ltd.
• JCOM Co., Ltd
• KDDI CORPORATION
• KDDI Research, Inc.
• LAC Co., Ltd.
• NEC Corporation
• NIFTY Corporation
• Nippon Television Network Corporation
• NRI SecureTechnologies, Ltd.
• NTT, Inc.
• NTT DATA INTELLILINK CORPORATION
• NTT DOCOMO, INC.
• NTT DOCOMO BUSINESS, Inc.
• NTT EAST, Inc.
• NTT ME, Inc.
• NTT Security (Japan) KK
• NTT WEST, Inc.
• Oki Electric Industry Co., Ltd.
• OPTAGE Inc.
• QTnet, Inc.
• Rakuten Mobile, Inc.
• Ricoh Company, Ltd.
• SKY Perfect JSAT Corporation
• SoftBank Corp.
• Sony Network Communications Inc.
• TOKYO BROADCASTING SYSTEM TELEVISION, INC.
• TOYO Corporation
• Trend Micro Incorporated
• TV Asahi Corporation
• TV TOKYO Corporation