Safe Web

Norton Safe Web Version 3.20.0.13 - Microsoft store
https://microsoftedge.microsoft.com/addons/detail/norton-safe-web/bdaafgjhhjkdplpffldcncdignokfkbo

Norton Safe Web Version 3.20.0.13 - Chrome store
https://chrome.google.com/webstore/detail/norton-safe-web/fnpbeacklnhmkkilekogeiekaglbmmka

[...] on a recent search using Edge [...], N360 deemed some of the sites to be safe.  When I clicked on the link, MBAM blocked a Trojan in one case and a PUP in another. 

Norton 360 or Norton Safe Web deemed some of the sites to be safe?
Curious, are you also running Malwarebytes Browser Guard? 
Can you share link/s with me in private message? (click my Community name 'bjm_' to send private message). 

Norton Safe Web analyzes and rates websites to see how they affect your device.

As a site owner or a site visitor, you can submit the website for the Norton Safe Web rating evaluation.

Please follow the steps below for site rating dispute:

1. Go to https://safeweb.norton.com
2. Enter the website you want us to evaluate in the search field and press Enter
3. Click on "Click here to submit a dispute"
4. Enter the required details in the form and click on Submit button 

https://safeweb.norton.com/help/site_dispute

Dispute resolution could take up to 2 days and you will receive email notification:

Use this form to submit URL which you believe is incorrectly classified by Norton -
Safe Web URL submission portal - https://submit.norton.com/?type=URL

SafeWeb rating of the submitted website will be evaluated within the next 48 hours: