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In a world revolves around cyberspace communications there is bound to be some bad things happen as well as all of the good they do to help people communicate, shop, and work. Those things only scratch the surface to what a computer can do. If your really think about it, almost everything is done by computer these days.

It can be very simple or very complicated. A computer virus can put a computer completely out of service by destroying the hard drive or be a nuisance and cause pop ups or slow moving systems. A virus can even hide information files on the computer so the user cannot find it.

Imagine now that some person, a hacker, is trying to get your personal information; your social security number, your phone number, address, even a computer copy of your signature. They could use it to go shopping, but it is doubtful. He or she may be getting it to sell it to someone else so they can use it. Any information that is in cyberspace can be tampered with or collected.

There are many different types of viruses that can affect computers and each is different in the damage it may cause. For example, a resident virus can do damage such as corrupt files and programs on the computer, whether or not the applications are open or closed. It dwells in the RAM or random access memory.

Direct action viruses will start infecting a computer when it is booted up. It gets in the system and replicates itself causing all kinds of mayhem from the root directory of the hard disk. A DDoS, or Directory of Service Virus was unleashed in South Korea and caused all kinds of chaos in which many computers tried to gain access to one particular site and caused it to slow down immensely by overwhelming its server.

That type of virus can be extremely aggravating to the owners of the sites and those trying to use them. A polymorphic virus is extremely hard to get rid of because it is encrypted, which means that it replicates itself, but the antivirus software protection can't locate it because it changes, or morphs, so its code changes all of the time.

Banking systems, government systems and transportation systems would be primary targets for cyber-terrorists who want to cripple an economy or cause mass confusion which gives them a chance to move in on a target. The beginning of such chaos could begin with something as simple as a virus.

Luckily, there are also people that spend much of their time combating these viruses as they are spread or about to be spread. Hopefully, they will triumph and put an end to the evil viruses.