Define and explain the difference between viruses worms logic bombs and Trojan horses?

Answer 1

Virus: a program that replicates by attaching itself to other programs; worm: a program that copies itself throughout a network or the internet without a host program; logic bombs: dormant code added to software and triggered at a predetermined time or by a predetermined event; Trojan horse: needs a host program to work hides as a legitimate program.

Answer 2

** Quotes taken from the Panda Anti-Virus website and altered for ease of reading**

* Viruses are computer programs designed to infect files. In addition, some can have annoying, destructive or even irreparable effects on systems. * Worms are programs that make copies of themselves in different places on a computer. The objective of this type of malware is usually to saturate computers and networks, preventing them from being used. Unlike viruses, worms don't infect files. * Logic Bombs: They are not considered viruses because they do not replicate. They are not even programs in their own right but rather camouflaged segments of other programs. Their objective is to destroy data on the computer once certain conditions have been met. * Trojan Horses: Unlike viruses, Trojans do not reproduce by infecting other files, nor do they self-replicate like worms. They appear to be harmless programs that enter a computer through any channel. When that program is executed (they have names or characteristics which trick the user into doing so), they install other programs on the computer that can be harmful.