The Global Counterterrorism Forum published this report to compile a non-exhaustive list of governmental good practices regarding strategic communications and social media aspects in preventing and countering violent extremism and terrorism online for GCTF Members – as well as any other interested Government. The good practices expressed in this document were identified in meetings and subsequent discussions with GCTF Members, reflecting their experience in this regard. Moreover, with these recommendations, the GCTF aims to support and complement existing work and initiatives by other international and regional organisations, namely the UN and other relevant stakeholders involved in this context. The good practices are divided into three sections: Section I addresses overarching good practices for preventing and countering violent extremism and terrorism online; Section II addresses good practices for content-based responses; and Section III addresses good practices for communications-based responses.