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Cyber Crime can be defined as an illegal activity which targets computer networks. We can be in the danger of being targeted by cyber criminals or spammers without our knowledge. For committing a cyber crime, we need not break into a house and commit theft. Cyber criminals can comfortably operate from any part of the world and successfully break into a computer. It is called as ‘Hacking”.

Any illegal activity such as change of computer date, forgery and electronic fraud is considered as a cyber crime. A prankster may intentionally use the computer for disrupting an essential service that may be useful for the public.

Computer virus is like an epidemic which spreads from one computer to another. There is a criminal activity called as ‘Nigerian 419’ where emails are sent to gullible people saying that a whopping amount of money is available for free.

Hackers are dangerous guys who illegally enter into a website altering the contents of the website. A few months back, when the staff of a famous University in India, opened their university website, they were in a rude shock. Their website was completely altered into a pornographic website by hackers from somewherelse in the world.

Computer virus and Trojan Horse are notorious programs which infect our computer. These viruses are spread by sending viruses as attachments. The Trojan Horse can make a severe problem by deleting vital information and files on your computer.

Throughout the world, the police are intensively trying to deal with the criminal and illegal activities on the internet with the help of experts in the computer field.

How to protect your computer

1. You can install a firewall
2. An anti-virus software will be highly useful.
3. E. mails and files should be scanned before downloading from the internet.

Use an up-to-date operating system.