GIABA. An extensive collection and links to financial crimes. The Inter-Governmental Action Group against Money Laundering in West Africa (GIABA) is West Africa's regional body against money laundering, terrorist financing, and Proliferation Financing (ML/TF/PF). GIABA was formally established as a specialized institution of the Economic Community of West African States (ECOWAS) by the Authority of Heads of State and Government of ECOWAS in December, 2000.