Think you got a nice greeting card from a friend va e-mail? Well, think twice before opening it. The newest computer virus threats are turning up in fake plain-text e-cards that look real, but carry nasty viruses.

According to a recent computerworld.com article, this latest virus threat in the form of fake e-card notification e-mails are unleashing nasty viruses and virus-carrying Trojan horses on unsuspecting users. Accoridng to the article, while e-card-triggered viruses and Trojan horses are not new, the latest versions are becoming more difficult for typical antivirus and antispam defenses to detect. All recipients have to do to trigger the virus is to click on the link created by the e-mail client once they have read the message. To trick recipients into opening these fake e-cards, perpetrators are sending these e-mails using the names of some of the most popular electronic greeting card companies in their messages and Web links.

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