E-mail virus is one of the most popular computer viruses. It is a set of computer code attached in an e-mail. Once you download, open or even simply click on the attachment with virus, your system will be infected by the email virus very fast even before your antivirus program detect it. Email virus spreads at a fast speed and conducts great damage to your PC, you should of course learn how to protect your computer from e-mail virus. 1. Prevent Email virus from entering your computer from the very beginning. As you know this virus comes with attachment in email, you should not casually download email attachment from strangers no matter how curious you are. Delete emails from strangers instead of keep them. 2. Always keep your Firewall turn on. 90% of this virus can be stopped by firewall which can filter out e-mail that may carry a virus attachment. 3. Equip your computer with a professional antivirus program. In fact, no antivirus program can stop all the viruses in email from infecting your computer once the virus is activated. Because e-mail virus can spread at an amazing speed while computer security programs needs some time to update its signature database. However, use your antivirus program to scan the attachment before you open it. If your computer has already infected by an e-mail virus, a security program is the only helper you can get. Restart your computer in safe mode, update the antivirus program, run an online scan and then full scan.