ReadNotify Email Tracker (Client) Detection
Medium Nessus Network Monitor Plugin ID 3410
SynopsisThe remote host passes information across the network in an insecure manner.
DescriptionThe remote host has opened an email that is being tracked by ReadNotify. This software embeds a tiny HTML link within an email such that when the user opens or highlights the email, a connection is made to an Internet server that tells the email sender when the email was opened, the operating system of the recipient, the email client of the recipient, the geographic location of the recipient, and more.
SolutionUse anti-spam software to block 'phone home' applications or disable HTML within the email reader.