Site Crawl report show strange duplicate pages

[Neo4j]

Beginning in early in Feb, we got a big bump in duplicate pages.  The URLs of the pages are very odd:

Example URL:
http://firstname.lastname@website.com/dir/page.php
is duplicate with  http://website.com/dir/page.php

I checked though the site, nginx conf files, and referral pages, and could not find what is prefixing the pages with 'http://firstname.lastname@'.

Any ideas?  The person whose name is  'Firstname Lastname' is stumped as well.

Thanks.

[Neo4j]

I will send details to help@moz.com

Thank you.

[kevin.loesken]

Hi there!

Send us a ticket to help@moz.com and we'll take a look as well

Thanks!

Kevin
Help Team

[DirkC]

Could you share an actual url? Can you see in the crawl which pages are linking to these strange url's? You could try to replicate the crawl locally (with Screaming Frog) to see if the problem is replicated

Did you check your url rewriting? Maybe you're trying to clean your url structure & the parameter is translated the wrong way?

Dirk