Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. According to cyber security experts, a cyber-weapon can be defined as a computer code used with the aim of threatening, altering or causing physical, mental or functional harm to systems, structures, or living beings. Nowadays, more countries tend to develop cyber warfare policies in order to protect their national interests. Over the recent years many cyber weapons have been identified such as Stuxnet, Duqu and more recently Flame malware. Learn more about the latest cyberweapons in this book.