![]() ![]() Details like the alleged sender, subject, message, attachment name and file type, payload (if any), and method of finding email addresses to send itself to can be radically different. ![]() Some email worms such as Nimda can run by themselves without any intervention from the user, and may even infect the computer from the preview pane. Essentially, an email message with an attachment arrives in a mailbox and when the user downloads and executes that attachment, the worm creates a new email message with a copy of itself attached and mails itself to one or more other email addresses. Some worms may have more than one method of spreading.Įmail worms spread through email messages. The most common method of categorization is how they spread. As with viruses, worms come in many types.
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