Viruses spread rapidly and can damage or destroy your computer. New ones appear almost daily. It's critical that you install and update anti-virus software regularly. Use the program to scan all the files on your system once a week, deleting the infected ones.
2. Be wary of e-mail attachments:
A virus can hide in an attachment. Opening it will unleash the virus. Don't open an attachment from anyone you don't know. Even if you do know the sender, an infected attachment may have been surreptitiously sent from an infected machine. The safest thing to do is to scan the attachment with anti-virus software before you open it.
3. Install a firewall on your computer:
A firewall is a software program that blocks unauthorized access to your computer. This is particularly important if you have a broadband connection, such as DSL or a cable modem. Windows XP has a built-in firewall, so make sure it's activated if you use that operating system. If not, we recommend ZoneAlarm. You can download it for free for personal use from Zone Labs.
Or better to use open source software "Comodo Firewall".
4. Protect your passwords:
Many online services, such as banking, brokerage and e-mail require the use of passwords. A secure password is the first line of defense against cyber-snoops. Use a different password for each account, don't divulge them to anyone and change them periodically.
5. Update security patches for your operating system and web browser:
You've probably read about security "holes" that turn up periodically. Once they are discovered, you can download fixes. For Windows users, an easy way to update your system is click on the Windows Update option under the Start menu.
6. Back up your data:
Make copies of your files in case they become corrupted, your system fails or your computer is damaged or stolen. Get in the habit of doing this regularly, at least once a week.
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