The Trouble with Outlook Email Encryption

The Trouble with Outlook Email Encryption

June 7, 2018

You can send encrypted messages using MS Outlook, but there may be a problem.


In a message if you click on the option for More Options at the bottom right of the tool bar: 

  .  .. a Properties dialog will open with a Security section.   Clicking on Security Settings will bring up the option to encrypt the body and attachments to an email.    


 Click on "Change Settings . . ." and you'll see that you have the option to set a cryptography format.  The default format is S/MIME.  


Secure/Multipurpose Internet Mail Extensions is a standard public key encryption, but it has been compromised. 


The Electronic Frontier Foundation posted a notice last month, stating that a flaw may allow the plaintext of emails encrypted with PGP and S/MIME to be revealed.   Security experts are recommending that that it these encryption methods be disabled from email clients. 


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