The copyright infringement of software (often referred to as software piracy) refers to several practices which involve the unauthorized copying of computer software. Copyright infringement of this kind is extremely common. Most countries have copyright laws which apply to software, but the degree of enforcement varies. After a dispute over WTO membership between Iran and USA led to the legalization in Iran of the unconstrained distribution of software (see Iran and copyright issues), there have been fears that world governments might use copyright politically. In most third world countries, the term of a copyright never exceeds any useful life a program may have. The oldest legacy...