Cyber security issues related to defence and military establishments fall under the purview of the ASEAN defence sector. Priority areas of cooperation under this sector aims to: (i) enhance awareness on cyber security challenges; (ii) leverage capabilities among ASEAN Member States and its external partners; (iii) develop cooperative mechanisms and solutions in a coordinated manner. 

Under the oversight of the ASEAN Ministerial Meeting on Transnational Crime (AMMTC), the Senior Officials Meeting on Transnational Crime (SOMTC) covers the issue of cybercrime cooperation in the SOMTC Work Programme to Implement the ASEAN Plan of Action to Combat Transnational Crime. The Work Programme focuses on several areas, such as exchange of information and knowledge, including on relevant laws and regulations of the ASEAN Member States; public awareness building; capacity building activities for law enforcement officials, particularly on cybercrime forensic capabilities; and promotion of cooperation with external partners.