E-Mail Tagging to Prevent Phishing
August 19, 2019

Starting the afternoon of Friday, August 16, 2019 all email sent to UNTHSC email addresses from senders external to the organization will have the subject prepended with the tag [EXT] to denote that the message originated externally. This tagging will give our customers another layer of information to determine the veracity or legitimacy of requests sent through e-mail. For instance, users can easily identify a problem and increase their skepticism when a message purports to be from a Dean or executive, but has the [EXT] tag at the front of the subject line. Users should also be more vigilant with attachments or links from external senders as well as senders asking for financial or username/credential information. Any questions about this tagging can be sent to the Information Security Office at