There are new variations of an already existing e-mail worm. Paypal customers are the target. The subject line of the infected email says, "YOUR PAYPAL.COM ACCOUNT EXPIRES." The virus appeared Friday in the UK, New Zealand, Australia, & South Africa.
The message threatens to close the recipient's PayPal account, unless they respond. It warns not to send credit card info by e-mail, and asks instead that they click the attached file.
The file opens a pop-up window, which has spaces to fill in credit card #, PIN, security code, and expiry date. The information is then sent by the virus to the virus' writer, and the virus is send along to the recipient's email address book list. Source