Some Attacking Concepts
Virus: A set of instructions that when executed inset themselves into other programs and presumably intend bad consequences.
Bacterium: A free standing program that replicates itself and causes harm by consuming resources
Worm: Similar to a bacterium that propagates over a network
Trapdoor: an undocumented entry point which is written into a program often for debugging purposes
- A virus can install trapdoors as it propagates
Trojan horse: Instructions hidden in a seemingly useful program which can or do perform bad things. Viruses add Trojan horses to originally good programs
Logic bomb: malicious instructions that trigger on some particular event or time in the future