本文回顧了川普政府就任以來的網路戰略規畫與實踐狀態，並援 引國際關係學界中的威脅平衡理論進行分析。研究結果顯示美國當前 的國家網路戰略以因應威脅為主軸，對內積極建設網路攻防能力，對 外則與友好國家開展跨國網路安全合作，藉以平衡來自中國和俄羅斯 等競爭對手的挑戰。惟部分戰略內容因具有較突出的單邊主義特質， 在實踐過程中已引起諸多爭議，對於國際網路政治的穩定運作及網際 網路發展前景或將造成更多變數。

This article reviews the formulation and practice of the Trump administration’s cyber strategy and analyzes it through the Balance of Threat Theory of international relations. The research results show that the current national cyber strategy of the U.S. is aimed to resist security threats. The Trump administration has actively constructed cyber offensive and defensive capabilities internally and developed cross-border cooperation in cybersecurity with friendly countries to balance the challenges from adversaries such as China and Russia. However, the strategy has caused some controversy in the course of its practice because of the obvious unilateral style and could make the future of international cyber politics and the scenario of the Internet more unpredictable.

網路安全;美國國家網路戰略;美國外交政策;國際網路政 治;防禦推進

Cybersecurity; The U.S. National Cyber Strategy; The U.S. Foreign Policy; International Cyber Politics; Defending Forward