恐怖主義以國際化新面貌出現在東南亞地區已經形成對區域內國家安全的嚴重挑戰，同時也因為恐怖組織具有非國家行為者威脅區域安全的特性，其活動方式與範圍繁複，不僅僅以單純的暴力攻擊方式進行，另有以滲透、洗錢、非法入境、核生化原料販運，甚至進行網路攻擊等等，凸顯出恐怖主義與非傳統安全因素對區域安全的威脅大幅增高。而國際反恐的進行，衝擊區域內伊斯蘭世界的輿論動向，各國政府無不審慎因應。九一一恐怖攻擊之後恐怖主義及其相關安全威脅的嚴重性已經成為各國政府以及安全研究領域專家眼中的重點，恐怖主義似乎已經引導轉變國際安全的政策焦點所在。本文主要目的在於探討東南亞恐怖組織與恐怖活動對亞太區域安全所產生的影響，以及對於個別國家安全政策發展所造成的衝擊。

Over the past decade, terrorist activities in Southeast Asia have increasingly posed great threat upon regional security. By developing international networks, terrorist organizations can effectively launch operation across borders and deliver massive terror to societies concerned. Unlike traditional security threats to states, threats of terrorist organizations are characterized by its vast complexity and scope of activities. Not only do terrorists conduct violent attacks to communities targeted, but also carry out money laundering, penetration, illegal entry, bio-chemical and nuclear materials trafficking, and internet assault. Regarding regional security, the level of threat posed by terrorism and non-traditional security has gone up dramatically. While international cooperation on counter-terrorism campaign progresses, global Muslim community contemplates differently. Concerns were raised toward counter-terrorism campaign among regional governments. After the September 11 attack, terrorism and related security threats have become focal point of security policy and research. Indeed, development of terrorism in the region has transformed the focus of international security. This paper is trying to examine broader impacts of terrorism on agendas of regional security and individual national security.