How many types are there of viruses?

Question

are there all kinds of viruses

Answer 1

I think when you mean viruses you mean some thing which could harm your computer

Malware, also known as Malicious Software, is software designed to infiltrate or damage a computer system without the owner's informed consent. The term is a portmanteau of the words malicious and software. The expression is a general term used by computer professionals to mean a variety of forms of hostile, intrusive, or annoying software or program code.

Many normal computer users are however still unfamiliar with the term, and most never use it. Instead, "computer virus" is incorrectly used in common parlance and even in the media to describe all kinds of malware, though not all malware are viruses.

Software is considered malware based on the perceived intent of the creator rather than any particular features. Malware includes computer viruses, worms, trojan horses, most rootkits, spyware, dishonest adware, and other malicious and unwanted software. In law, malware is sometimes known as a computer contaminant, for instance in the legal codes of several American states, including California and West Virginia.[1]

Malware should not be confused with defective software, that is, software which has a legitimate purpose but contains harmful bugs.

Of all computer code released today the majority may be malicious. Preliminary results from Symantec sensors published in 2008 suggested that "the release rate of malicious code and other unwanted programs may be exceeding that of legitimate software applications."[2] According to F-Secure, "As much malware [was] produced in 2007 as in the previous 20 years altogether."[3] Malware's most common pathway from criminals to users is through the Internet, by email and the World Wide Web.[4

Answer 2

There's lot's of diffrent types of virus, theese change from simple tracker's to advertise to virus' that are only designed to beak a computer. Not only do people use virus' but they use other "hacking tool's" so I have listed some of them below too.

Trojan, There are two type's of trojan, one simply infect's someone's computer and look's for flaw's in there secuirty, the flaw's they are normally looking for are open or non secure port's. They do this by "pining" or sending packet's of information to a port. The second type of Trojan will not only scan for security flaw's but will also attempt to brute force them.

Reboot virus. A reboot virus' only purpose is to make it so the user cannot use the computer. There are two type's of reboot virus, one is a .bat file and initiate's on startup the code for the computer to restart. The other has a string of malicious code already in the virus and on startup and send's it's own string of startup code to the computer.

Tracking and Advertising. Theese are probabally the last harmfull virus'. An example of a Advertising virus/spy ware are when you open IE and something come's up like "your computer is infected,download our software for just $30 and it will clean your system"

Worm's and Keylogger's. Worm's and key logger's are both made to steal the user's information. It does this by recording the key stroke's on your computer and sending them to a third party.

Not only are there Virus' and Spy ware but the use of hacking tool's are becoming more and more popular.

Brute forcer's. Brute forcer's come in two form's, one is used to "brute" a password. They do this by trying all (or most) possible password's, they normally use Dictionary's as there password list's so I would advise you to use a password not in the dictionary. The second type is made to Brute Force port's.

Cracker's. Cracker's instead of trying multiple password's attempt to decrpt the password.

There of course are more type's of virus,spy ware and hacking tool's but theese are some of the more commonly used one's.

Answer 3

take your pick the list goes on and on.,

Answer 4

trojans, keyloggers(sometimes theyr good) there is basic .bat (batch) file that can do basically anything.  and spy virus thingies.

Answer 5

there are so many viruses u can have the complete article on different viruses at http://www.santoshhworld.blogspot.com