According to an advisory posted at the Web site of security firm Sophos, "technical support has received a significant number of calls from customers concerned about a widespread e-mail which invites users to pick up an 'E-Card' from a Web site called either FriendGreetings.com or Cool-Downloads.com." The advisory says that if users follow the link they receive in the e-mail, they are invited to install an application onto their computer. "Two lengthy end-user license agreements (EULA) are displayed," the advisory says, "the second of which states that by installing the application the user is giving permission to send a similar greeting card to all addresses found in the user's Outlook address book." The resulting e-mail that a user in the address book will get takes the following form: (Recipient name) you have an E-Card from (Sender name).