<div><p class="Els-history-head">National defense is an effort to maintain territorial integrity, national safety, and state sovereignty, from disturbances threats the nation. Threats have evolved, not only military non-military but also hybrids. Terrorism a threat in area of as well security. By using qualitative research methods, this article tries answer question, what role Indon...

At this stage, China's research on blockchain is gradually deepening, and the number of patents even far exceeds that western countries. However, with continuous development progress technology, problems in system attack prevention become more obvious. Based background, paper briefly describes system, puts forward scientific feasible defense technology strategies for attacks from data layer, ne...