Does Anti-Virus make a difference?

Like so many of us in the profession, I was asked to look at friend’s computer. Nothing specific was wrong; she had just moved out of an “Friend/Ex-Friend’s” house. She was worried that they might have done something to her machine. So I started looking at it. Nothing looked really out of place. The owner would never install anything (including updates or e-mail links). So after updating everything, I started to scan for viruses and malware. That’s when I noticed that there was no anti-virus software. I thought that was odd because there was the update program. I asked if she had uninstalled it and she said, “no.” It then hit me:  the “evil plan” was to remove her anti-virus and trouble would soon follow.  Fortunately, her “safe-surfing” habits of never opening or installing programs had saved her! Even after 3 months of surfing, she still had a clean machine. I guess this is pretty good evidence that “Safe-Surfing” and a little luck can keep you safe.