Your friend didn't send out the virus to you.
An e-mail virus travels as an attachment to e-mail messages, and usually replicates itself by automatically mailing itself to dozens of people in the victim's e-mail address book. Some e-mail viruses don't even require a double-click -- they launch when you view the infected message in the preview pane of your e-mail software.
An excellent way to put yourself at risk for a virus is to send "forward" emails. Why? Well, let's say that you received an email from someone who had sent it to 20 people. She not only sent the email to 20 people, but she also sent your email address to them too. Now if each of those 20 people clicked "FORWARD" and sent that email off to 20 people each, that means your email was sent off to a whopping 400 strangers all within seconds.
Many people do not delete their sent or deleted emails, which means that emails remain within your email program and on your computer. Also, some have their emails set to add email address from received emails, to their address book automatically.
All it takes is one infected computer in that chain of forwarded emails to be infected. The virus on the infected computer looks to the sent, deleted, draft and address book for email address and "spoofs" an email and sends it out automatically without the person even being aware of it being done.
Chances are the email came from someone else's computer entirely, maybe even your own, and not your friend's computer. Any computer that has her address on it and is infected could be the culprit.
Here is some excellent advice on how to protect your computer:
It's not only important to run anti spyware programs regularly, but it's important to take measures to protect yourself from getting such stuff to begin with.
Some browsers are more prone to attracting malware than others. Internet Explorer is terrible for getting hit with malware type stuff. I use Mozilla-Firefox. Most if not all browsers and firewalls come with features that block ads and popups, it's important to learn how to use those features so that you are preventing those types of things from even reaching your computer.
The things I do to keep my computer safely protected:
1. Up-to-date AntiVirus program;
2. Up-to-date Firewall program;
3. I connect to a router;
4. I use Mozilla-Firefox
and extensions https://addons.mozilla.org/en-US/fir...cation=firefox
5. I block all internet ads with Mozilla-Firefox extensions and my Firewall;
6. I run Lavasoft Adaware
7. I download and run Dr Web's Cureit
once a week. Note: If you do not buy the program you need to download a new updated version of the free one each time you want to run it;
8. I run ccleaner
9. I virus scan once a week;
10. I do not turn on "preview pane" in Outlook Express. Previewing emails is like opening them up. How to disable preview pane
11. I never, ever, ever open an email from anyone that I am not expecting one from. Even if I know the person. I'm not only talking about the attachments, but the email itself too. While some attachments have a virus/worm/trojan, it's also possible to embed a 1 pixel transparent gif file into a mailing that activates when you open the email and proceeds to send back data to the sender.
12. I delete ALL forwarded emails. Then send an email to the sender and tell them to opt me out of any future forward emails and tell them what I told you above about how sending forward emails puts everyone at risk for computer viruses.
13. I also use a startup manager
with my Windows XP so that I can see what is running in the background and I turn off everything that I don't want to run, and investigate things I see running that shouldn't be there.
14. Never download free screensavers and fun looking toolbars!!!! They are filled with malicious spyware.
15. I delete cookies and online and offline content and temporary internet files. Never save banking or password or any sensitive information cookies on your computer.
In the more than 7 years since I've been on the intenet I've never had a virus. The closest I came was some malware that was apparently sending out thousands of emails that I didn't know about. I eventually found out when I called my ISP to find out why I couldn't send or retrieve my email and they told me that they turned off my privileges! I did all kinds of scans at a variety of links they gave me, and the only thing that showed up on my system was some adware, some of which apparently was the problem. Once I got rid of that stuff, my ISP turned my email privileges back on again.
I also know so many who have had computer crashes and have had to reformat their systems because of spyware/adware/malware.
People may think it's no big deal, but when you have been affected by it like I have, or know so many others who have lost everything because of it, you begin to realize how extremely important it is to be vigilent with keeping that stuff out of your computer.
If you absolutely need to send an email to more than one person at a time IE: dinner invitation, then be courteous and use BCC for the 2nd and subsequent recipients. BCC stands for "Blind Carbon Copy", which means that the email addresses will not show up on other peoples' computers because it's hidden.How to send BCC emails using Outlook Express:Instructions for sending BCC emails using a variety of email clients
Unfortunately for those being spammed with emails containing viruses and worms, there is no relief until the person who's computer is infected does a virus scan and gets rid of the offending virus/worm.
What I do if I get such email is to send an email to every single person in my address book using "BCC" protocol. In the email I tell them
|SUBJECT: SOMEONE HAS A COMPUTER VIRUS!
I have been getting virus emails and that means that someone has an infected computer and tell them the following:
1. Update your antivirus software and run a virus scan
2. Download and run Lavasoft Adaware;
3. Download and run Dr Web's Cureit once a week. Note: If you do not buy the program you need to download a new updated version of the free one each time you want to run it;
4. Please DO NOT forward this email. Instead, please create a new email with this information in it, and send it to everyone in your email address book using "BCC" protocol so that they can scan their computers as well. Please ask that they do the exact same thing using a new email and BCC protocol with each send.
How to send BCC emails using Outlook Express:
Instructions for sending BCC emails using a variety of email clients