Intellectual capital (IC) and knowledge sharing (KS) are key elements for fostering firm value. Recently, this assumption has been called into question as there may exist negative and destructive effects in both IC and KS. Through a case study of 'Engineering Ltd.", this paper examines the 'dark side' issues associated by improperly implementing knowledge sharing . The subject of our study, “Engineering Ltd.” , is an engineering consultancy company with 10,000 employees and $1.5 billion in revenue. The case study is used to scrutinize the major risks of knowledge sharing and to introduce possible solutions.