“Despite extensive warnings, he said, people still open unexpected attachments.” Yep. You have to warn me. If people send me an attachment and I didn’t ask you to send it, or it’s something that requires an installation, I either an e-mail back or I call them and ask them what it is. When I hear “Oh, just open it – you’ll love it” I ask for more details. What is it? Why will I love it? And then I tell them, “sorry, but no. I have never had a virus on my computer and I am not going to risk it for that.” Yep, I am a hardass. And I have been virus-free since 1995. So I guess my strategy is working.