We never think that some terrible stories may happen to us. Listening to them we usually think how poor those people to whom such situations happen are. However, someday you can be sitting in front of your computer surfing the internet, checking out some web sites, looking for some interesting information. And you will even do not pay attention to those advertisements that pop up with the button “click here to continue”. Moreover you will click without any hesitation, because you have done it thousand times before. Unexpectedly your System Securit 2009 warns you that you have virus. And you see that your computer is unusable, you can do nothing to it. Now you realize that it your computer that is completely hijacked.

Wireless internet services are all around us; in the office building, at the airport, in the coffee shop, at the library or in the hotel. Without a laptop searching for the connection, we would never know this invisible force surrounds our environment.

Computer viruses, seem to be spreading faster than the diseases that originally gave them their name and like the organic varieties the instigators and malicious coders who design these programs are making them harder to detect and they are also coming up with new delivery methods.