Nowadays cyber warfare is used to be as a tool in military for attacking other countries which may have a direct affect on their nation. The aim of this research is to investigate the ethics behind the offensive cyber war. Cyber army faces great challenges in how to ethically conduct operations. The author discussed the concept of ethics and reasons that led to use information technology in military war, the effects of using cyber war on civilians, the legality of the cyber war and ways of controlling the use of information technology that may used against civilians. The author recommends that if cyber war is needed to be used against enemy, it should be used to hit only military significant goals, avoid indiscriminate attacks and minimize harms to civilians. This research uses a survey methodology to study the awareness of Arab citizens about the cyber war, provide findings and evidences of ethics behind the offensive cyber warfare. Detailed strategies and approaches should be developed in this aspect. The author recommended urging the scientific and technological research centers to improve the security and develop the defending systems to prevent the use of technology in military war against civilians. The Security Council in the international community must not tolerate any country using technology to use against civilians. Future recommendations could focus on the utilization of cyber warfare scientific knowledge to further investigation of using cyber arms. This can be gained in community awareness of understanding the meaning of cyber warfare through various media of press. © 2013 IEEE.