Indonesia as the largest marine mega-biodiversity in the world makes Indonesia very important to strengthen its maritime security by empowering coastal communities so that the welfare of the community can be achieved. The purpose of this paper is to explain the improvement of welfare through empowerment of coastal communities as an effort to strengthen maritime security in Indonesia. This paper uses a literature research method with a content analysis approach. The findings of this study are that community involvement is needed in empowerment programs that are not only limited to implementing the program, but also involved in the formulation and creation of the program so that the community feels responsible for program implementation and is motivated so that the program runs well. The hope is that with community involvement in efforts to empower technology-based coastal communities, it will take part in supporting Indonesia's maritime security and also improve the welfare of these communities.

In the era of the Industrial Revolution 4.0, which was marked by the massive development of information technology and the easy distribution of information without any filters. This study aims to explained the urgency of digital literacy in order to ward off radicalism in the millennial generation in the era of the Industrial Revolution 4.0. The method used in this research is literature review with content analysis techniques. The conclusion of this study is that digital literacy skills are very important in warding off radicalism and need to be developed in eight essential elements, namely cultural, cognitive, constructive, communicative, creative, critical, and civic. In addition, to improve digital literacy skills, Siberkreasi activities can be used. Hopefully, with the digital literacy skills of a digital user, namely the millennial generation, they can filter the information obtained and ensure its correctness first.

The purposes of this paper are to: (a) explore terminology of terrorism; (b) recognize the wave theory of terrorism; (c) describe the countermeasures of terror in Indonesia; (d) explore the effectiveness of diplomacy and strategic communication in the campaign against terrorism in Indonesia. The method used in this research is literature review with content analysis techniques. The findings of this study are (a) acts of terrorism can be carried out based on a logic of action or method of action; (b) Currently, Indonesia is in a religious wave so that in facing terrorism it uses a law enforcement approach; (c) In addition, Indonesia tends to use a soft approach, namely cooperation within UN organizations and the BNPT deradicalization program; and (d) Indonesian representatives in non-permanent members of the UN Security Council are a form of diplomacy and strategic communication which certainly plays a strategic role in dealing with terrorism, countermeasures against terrorism, and a commitment to reject the association of acts of terrorism with certain religions, ethnicities and/ or nations..