With the development of technology computers and internet have crept into every one’s life. No person today is untouched from the influence of internet. With the easy access of the world with the help of the internet it has brought in miscreants as well. Like every movie is incomplete without a villain or a negative character in it, in the similar manner internet has the negative character of the viruses and the hackers. The internet has made it easier for us to use our banking services on our desktops without going to the banks but at the same time the viruses and the hackers have made it unsafe. DOS attack or a victim of a network outage as a result of the SQL Slammer virus or other traffic-causing worms causes the transactions unsafe for the people. These worms sneak into the private information of the people and pass on to the unethical hackers. These unethical hackers use the personal information of the people and misuse it for their benefits. These viruses in the form of Trojans, Malwares etc are designed by the computer geeks who use their skills in wrong doings. The viruses created harm the computers as well if downloaded. The question of who is at fault for preparing these viruses is a very wide and ambiguous. Some say that the viruses one which harm the software’s of a person’s computer are created by the software companies themselves to speed up the sales of their software’s. Others say they are created by the antivirus firms who to sell their products create these malwares to sell their products. The viruses are the demons or the villains of the virtual world who are actually scary for any computer user. They get into your system and destroy everything one has stored up from years. They are like the dacoits who steal your money without any information and trace.