I almost gave in to it, and opened the what seemed as a word document file. If it weren't for the application-like icon and "screensaver" file type, i wouldn't have known that the file wasn't actually a .doc file, but rather a .bat or similar executable which would have infected my computer with the Win32.Mydoom.am virus.
This file came attached, as a .zip to an email which had as subject:
Returned mail: Data format errorFrom: Mail Delivery SubsystemThe body of the email message was as follows (the actual domain name was replaced with 'mydomain', for privacy purposes):
Dear user of mydomain.com, mail system administrator of mydomain.com would like to let you know the following,
We have found that your email account was used to send a large amount of unsolicited e-mail during the last week.
Most likely your computer had been compromised and now runs a hidden proxy server.
We recommend that you follow instructions in the attachment in order to keep your computer safe.
Sincerely yours,
The mydomain.com support team.
So be on the lookout for something like that, especially if you have your own domain name and email server. As always, think twice before opening any kind of email attachments.