The International Workshop on Non-Technical Losses, organized by ANEEL at the headquarters of the National Confederation of Industry (CNI) in Brasília, brought together experts, authorities, and representatives from the electricity sector to discuss sustainable solutions aimed at reducing energy meter fraud and illegal connections. The event addressed the impact of non-technical losses, which were causing estimated annual losses of BRL 10 billion, and examined regulatory practices and international experiences. At the meeting, Joana Monteiro, director of Leme, contributed insights on the activities of armed criminal groups and presented recommendations to the electricity sector, emphasizing the importance of accurately measuring the problem, improving the quality of investigations, and understanding the criminal mechanisms involved in the frauds.