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Japan: The Reluctant Cyberpower

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Asie Visions
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Asie.Visions, No. 91, March 2017
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Japan’s cyberdefenses remain underdeveloped compared to the country’s great reliance on information and communications technology. Despite Japan’s initial slow response to the security challenges emerging from cyberspace, this paper posits that cybersecurity under the administration of Japanese Prime Minister Shinzo Abe has moved to the core of the country’s national security policy. The 2020 Olympics Games are a major catalyst for this.

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Over the last two years the Japanese government has indeed laid the structural and legal foundations for becoming a serious player in cyberspace. That effort, however, remains underfunded and is slowed by overly complicated intergovernmental coordination processes and stovepiping within the government.

While Japan remains a reluctant cyberpower with a decidedly defensive outlook and a particularly change-resistant bureaucracy, plagued by vertical compartmentalization, recent initiatives and policies have made it clear that the country is moving in the direction of potentially becoming one of Asia’s more advanced cyberpowers in the not-too-distant future.

This paper first outlines an analytical framework used to evaluate Japan’s current standing and progress as a cyberpower: from whole of government (WoG) to whole of nation (WoN) and whole of system (WoS). The following three sections discuss in detail the evolutionary stages in the development of Japan’s national cybersecurity strategy. The last section deals with the Japan Self-Defense Forces’ changing role in cyberspace and how it is slowly embracing a more militarized response to state-sponsored cyberthreats.

The administration of Prime Minister Abe has been careful not to abandon the Japan Self-Defense Forces’ defensive posture in cyberspace and has not indicated that it will develop offensive cyberwar capabilities. This, however, may change should the new US administration abandon the United States’ historic solid defense commitment to Japan. In that respect, Japan’s deepening of engagement with like-minded countries will assume even greater importance over the next four years.

 

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Japan: The Reluctant Cyberpower

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Author(s)
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Center for Asian Studies
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Asia is a nerve center for multiple global economic, political and security challenges. The Center for Asian Studies provides documented expertise and a platform for discussion on Asian issues to accompany decision makers and explain and contextualize developments in the region for the sake of a larger public dialogue.

The Center's research is organized along two major axes: relations between Asia's major powers and the rest of the world; and internal economic and social dynamics of Asian countries. The Center's research focuses primarily on China, Japan, India, Taiwan and the Indo-Pacific, but also covers Southeast Asia, the Korean peninsula and the Pacific Islands. 

The Centre for Asian Studies maintains close institutional links with counterpart research institutes in Europe and Asia, and its researchers regularly carry out fieldwork in the region.

The Center organizes closed-door roundtables, expert-level seminars and a number of public events, including an Annual Conference, that welcome experts from Asia, Europe and the United States. The work of Center’s researchers, as well as that of their partners, is regularly published in the Center’s electronic journal Asie.Visions.

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Date de publication
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Accroche

The 2026 Hormuz crisis has strengthened rather than weakened the rationale for Japan’s decarbonization strategy, contrary to what might have been expected. Rather than energy policy supplanting climate policy, the two should actually be viewed as inseparable.

Takashi Hattori
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Japan and Nuclear Weapons: Between Extended Deterrence and Normative Dilemmas

Date de publication
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Accroche

Since the late 1950s, Japan’s nuclear weapons policy has been based on the coexistence of two competing normative rationales: the rejection of nuclear weapons, rooted in the legacy of Hiroshima and Nagasaki, and the recognition of the central role of US extended nuclear deterrence for Japan’s security.

Timothée Albessard
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Japan’s Defense Industry Goes Global: Ambitions and Challenges

Date de publication
08 July 2026
Accroche

Long confined to the domestic market by a legal framework that strictly restricted arms exports, Japan’s defense industry is undergoing an unprecedented transformation.

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Fragmented Europe: Dealing with China as a technology and innovation power

Date de publication
30 June 2026
Accroche

How is Europe navigating China’s ascension as a technological power? The latest report by the European Think-tank Network on China (ETNC) provides a nuanced account of a converging, yet still fragmented approach across 22 countries. 

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Franz-Stefan GADY, « Japan: The Reluctant Cyberpower », Papers, Asie Visions, Ifri, 10 March 2017.
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Japan: The Reluctant Cyberpower