How to whitelist the Hut Six Phishing Simulator in Office 365

The easiest and most secure way to whitelist Hut Six's Phishing Simulator in Office 365 is to create a third party phishing simulation entry in Microsoft Defender.

  1. Go to and select the "Phishing simulation" tab.
  2. Add each domain you are using in your campaign
  3. Add the following IP to the Sending IP input:

For example, if you were running a campaign using the and domains then your entry would look like this: Screenshot showing complete phishing simulation form in office 365

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