________ is a representative development method when selfsourcing is adapted.

One should refrain from downloading suspicious software, (i.e. software license key generators), as they usually have other software embedded in them. These ill-intentioned software are known as______________.

In developing a new game, Generation X finds a necessary to modify existing software for illustrating characters in the game. Thus the company also pay to buy a right to modifying some existing programs, in addition to the use of the program. This is known as: