Studies show that there are many benefits of using Web 2.0 and social media in governments. However, the factors influencing government employees‘ adoption of these technologies are not well known. In this paper, the Unified Theory of Acceptance and Use of Technology (UTAUT) was integrated with two constructs, namely, perceived confidentiality risks (PCR) and attitude (AT) in order to investigate the factors influencing adoption of these technologies among government employees. The sample consisted of 600 usable responses collected from Tanzania Government Employees. To analyze the data, Structural Equation Modeling was used. Both PCR and AT were found to be influential.