The internet and social media have become effective platforms for spreading extremist ideologies, strengthening polarization, and creating “echo chambers” that reinforce radicalism. This research aims to identify the main challenges and formulate strategies to prevent conflicts triggered by intolerance and radicalism in the digital era. Using a qualitative approach with a case study method, this research analyzes secondary data from official documents, previous scientific studies, and social media content to understand the patterns of spreading intolerance and radicalism. The results show that the main challenges in conflict prevention include anonymity and accessibility of technology, social media algorithms that support confirmation bias, lack of digital literacy, weak supervision and regulation, and the appeal of radical ideologies. Therefore, a prevention strategy that involves strengthening digital literacy, improving regulations, and collaboration between stakeholders is considered very important in tackling radicalism in cyberspace. Hopefully, the implementation of this comprehensive strategy can realize a more resilient, inclusive and safe society from the influence of radical ideologies in the digital era. This research implies the need for multi-stakeholder collaboration in developing more effective policies to prevent radicalism in the digital era.Internet dan media sosial menjadi sarana efektif bagi penyebaran ideologi ekstrem, memperkuat polarisasi, dan menciptakan "echo chambers" yang memupuk radikalisme. Penelitian ini bertujuan untuk mengidentifikasi tantangan utama dan merumuskan strategi pencegahan konflik akibat intoleransi dan radikalisme di era digital demi mewujudkan keamanan nasional. Menggunakan pendekatan kualitatif dengan metode studi kasus, penelitian ini menganalisis data sekunder dari dokumen resmi dan penelitian terdahulu, serta konten media sosial untuk memahami pola penyebaran intoleransi dan radikalisme. Hasil penelitian menunjukkan bahwa  anonimitas dan aksesibilitas teknologi, algoritma media sosial yang memperkuat bias konfirmasi, kurangnya literasi digital, pengawasan dan regulasi yang lemah, serta daya tarik ideologi radikal merupakan tantangan utama dalam mencegah konflik akibat intoleransi dan radikalisme di era digital. Oleh karena itu, penguatan regulasi dan literasi digital serta kolaborasi multi-stakeholder dapat menjadi strategi dalam mengurangi radikalisme di dunia maya. Dengan strategi yang komprehensif ini, diharapkan tercipta masyarakat yang lebih tangguh, inklusif, dan aman dari pengaruh ideologi radikal di era digital. Penelitian lebih lanjut diperlukan untuk mengevaluasi efektivitas program literasi digital, dan menganalisis dampak regulasi konten media sosial. Penelitian ini mengimplikasikan perlunya kolaborasi multi-stakeholder dalam menyusun kebijakan yang lebih efektif untuk mencegah radikalisme di era digital

The discussion of this study is related to the factors causing aggressive behavior that is dominant in Mappi students. This study aims: (1) to determine the factors causing riotous (aggressive) behavior (2) to determine the types of riotous behavior possessed by Mappi students in Yogyakarta.This type of research uses a qualitative descriptive case study. This research was conducted at the Sanata Dharma University Student Dormitory, Jl. Jenengan Raya, Maguwoharjo, Depok District, Sleman Regency, Yogyakarta. The implementation of this research was from December 22 to January 17, 2024. The subjects of this study were 5 people, consisting of 4 employees of the Sanata Dharma University Student Dormitory and 1 shop owner. Data collection techniques used interviews, data analysis techniques managed and prepared data, read all data. Analyze by coding data, apply the coding process to describe the things to be analyzed.Results: There were 4 causes of the riots, namely: differences in stance, culture, affairs, community values. There are 4 types of behavior, namely: hate, achieving goals, spontaneous, revenge. Conclusion: Aggressive behavior of Mappi students is caused by unhealthy friendships and genetic factors. The type of behavior of Mappi students is closed social behavior.