1. Install a recognized reliable antivirus software: Antivirus softwares scan every file in your computer for unusual alterings in the file size, suspicious email attachments and links and many other things. The most important step that you can take to keep your computer clean of viruses is installing an antivirus software. See Norton AntiVirus, Microsoft Security Essentials, NOD32 Eset Smart Security, AVG Free Edition...
2. Scan all your emails in your inbox: It is better to scan your emails and the attachments in your inbox before opening them. You should do this even if you trust the sender since malicious codes(like Trojan Horses) can make their way into your system by appearing to be from a friendly known sender.
3. Update your antivirus software frequently: New viruses, worms, and trojan horses are born everyday. Thats why it is recommended to update your antivirus software frequently to have your virus signature database up to date.
4. Scan files before using them: This is always important, but especially if you are using a disc or flash memory to carry information between one computer to another. You could easily pick up a virus and introduce to your computer. Therefore, run a virus scan before launching new files to prevent infection.
5. Use common sense: Although this may be hard for new users of computer, but do not worry about it for you will overcome it by time! For example, if you realize that the site you are goint to download from is unprofessional, it is better for you to get rid of that website. Delete the attachments in your email inbox that are from an unknown sender for they can hold a virus.
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