Advances in technology have led to the transformation of societies, cultures, behaviours, economy and security. In this regard, the internet and its diverse applications provide a vital means of recruitment, propaganda and financing for terrorist organisations. In this chapter, the financial activities of terrorists and the opportunities emerging in the online environment are examined, and the question of how the internet is used as a medium for funding terrorism is answered. The main argument is that terrorists, similar to criminals, are using opportunities provided by the internet effectively and creatively for meeting part of their financial requirements.