One of my friends owns a business and gets tons of email and he uses Outlook on Windows .. AND he opens every attachment.
I was drinking wine at his bar and he told me he could not boot his computer anymore and was going to reinstall the entire OS, wiping out all this files.
I said, "HOLD ON", pour a glass of your best wine for free and I'll fix it! He said.... 'yea, right'... here is the wine, but no one can fix this.
I booted this system in 'step-by-step' mode and found that his automatic antiviral program was causing this system to hang on start up.... he was one of those guys that has everything 'autostart'.... so I turned off these 'autostart applications' using msconfig and then rebooted.
Now, he could manually run his antiviral program. I went home to sleep off the wine and Thai food.
I stopped by a few days later and my friend showed me a list of about 100 infected files with many, many viruses. I say, 'perhaps you will stop opening all those attachments and executable programs from strangers'...... (before, he said he loved to open everything to 'see what it was!!!')... well, you gotta love it
He now tells me he never opens attachments from strangers
So, the moral of the story is that you and your company staff are at much higher risk from email attachements than a reputable download site...
Here is the advise about viruses.... !!!!
NEVER OPEN OR CLICK ON EMAIL ATTACHMENTS FROM STRANGERS !!!!