The development of a harmonized legislative framework in as far as regional integration is concerned is fundamental in order to maximize the benefits and potential of generating economic development gains for Members States. The study that led to this publication was prompted by, among others issues, the fact that despite initiatives and directives of the relevant organs of the East Africa Community (EAC), Member States have continued to experience challenges in harmonizing their legislative frameworks in order to combat cybercrimes in their jurisdictions. The study focused on select countries in the EAC. The chapters herein bring to the fore the extent to which these States have harmonized their legal, policy and institutional frameworks on cybercrimes as required by the Treaty Establishing the EAC. Factors that have made it difficult for the States to harmonize their legislative framework in line with the EAC call have also analyzed. The overall findings reveal that States are at different levels in terms of harmonizing the cybercrime related laws to reflect the EAC directive. It has also noted that different challenges still abound. Common ones relate to lack of funds and existence of a multitude of uncoordinated institutions dealing with cybercrimes. Conflicting and duplication of mandates and lack of clear understanding by personnel charged with enforcement of cybercrimes in the select States have also been noted.