If you received a "Password Reset Confirmation E-mail" from Facebook DO NOT open the e-mail unless, in fact, you did request a password change- and be wary even then.

The social media blog Mashable is reporting the e-mail contains a malicious trojan horse, a virus, known as "Bredolab." Bredolab masks itself as the Facebook e-mail and downloads files from the web that will infect your computer. The e-mail contains an attachment that claims to contain your new password.

To avoid getting the virus, do not open a "Password Reset Confirmation E-mail" if you didn't request a password from Facebook. Also, Mashable points out that if you did in fact change your password, Facebook would not send a "Password Reset Confirmation E-mail" that contains an attachment. If you are still not sure if it's safe to open, Mashable suggests to "look at the full details of the e-mail- if the mails server [doesn't] belong to Facebook" don't open the e-mail.