Now a days, business is getting globalized. E-commerce is a very essential things in online trading platform. Without money business is not possible. Everything has a positive and negative site. Excessive money exchange attracts criminals. Crimes can be committed in cyber platform very efficiently without any evidence and traces. After Covid-19, committing financial fraud has increased. Criminals’ detection becomes very difficult. It becomes very difficult in international aspect. This cyber fraud spreads in many countries though online. Several conferences are taken places. Various treaties are implemented in these regards. Still the problem remains unresolved. Sufficient domestic laws are in enforced to prevent this crime. How laws are applied and dealt to prevent and detect the cyber criminals and crimes are discussed to bring certainty.