how do you deal with encrypted email traffic with Wildfire/Unit42?

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how do you deal with encrypted email traffic with Wildfire/Unit42?

Twitter Q20.

 

From: Alexandre Vandevelde ‏@avandevelde79  

 


#AskPANW how do you deal with encrypted email traffic with Wildfire/Unit42?


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Palo Alto Networks Guru

That is a great question. If a email message is encrypted, the content is opague to the firewall or any device that routes the message in some shape or form. This makes it difficult to inspect what is in the message.

 

Now if such a message includes a malicious document, like a weaponized word document, a potential exploit can still be prevented on the endpoint using Traps. If the email contains a link to a malicous website, i.e. a credential phishing website or a website carrying an exploit kit, the firewall will still see the outbound request and the subsequent server response at which point you can take action, either using the Threat Prevention capabilities to block exploit kits or phishing kits, or using PAN-DB to prevent access to known malicous URLs.

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