_________ is a fully-contained program that self-replicates and spreads through computers and networks
Trojans often are spread via an infected email attachment or a download that hides in free games, applications, movies or greeting cards. Your computer will often slow down due to a Trojan. A Computer Worm is a program that self-replicates and spread through networks. They are transmitted through attachment, file-sharing networks and links. They consume large amounts of memory or bandwidth and the network servers will often stop responding because of them. Rootkit is a program that allows hackers to have administrative access to your computer. It can be installed through commercial security products or third-party app extensions. Detecting rootkit-like behavior can be tedious work.