A script kiddies is a term used to describe those who use scripts or programs developed by others to attack computer systems and networks and deface websites. Script kiddies have a large number of effective, easily downloadable malicious programs capable of breaching computers and networks.
For example, Martin Calce, a high school student from Montreal, Canada, was arrested in 2000 for using downloaded tools to launch a series of highly publicized Denial-of-Service attacks against high-profile Web sites such as Yahoo!, Dell, eBay, and CNN. The financial damages were estimated at roughly $1.2 billion in global economic damages.