Hwo to fix HTTP Fake AV Redirect Request on the website

Hi guys

Does anyone know how to get rid of verification Threat: HTTP Fake AV Redirect Request from our website? Some users are complaining our sites are not loading due to Norton recognizing one specific link as a threat.

The problematic link is http://www.example.com/?section=about (even though we have no redirects and page loads as it should if you don't have norton). I don't have enough information what that actually means on the website and what actually i need to fix!

Thank you!