The program has detected an e-mail message with misleading content (hoax). These kinds of messages attempt to spread false rumors about non-existent viruses. Occasionally, they even trick users into deleting certain legitimate system files, by making them believe that they are viruses. This warning advises users to delete the message, and not to pay any attention to it.
Reason: the hoax detector is enabled. You can disable this functionality by accessing the Scan settings.