Nadine yes this is a virus , do not open that e-mail , report it as spam !!! This was a alert on FB about a month ago on my page , set your Fb book to alert you of any changes to your account . I have mine set for anytime anyone post or anytime I log in, it e-mails me to my Gmail account , it is kind of a pain to put all the passwords in to log in but it makes it more secure I think. All of this can be found in your settings . Hope this helps !!!
Marie