This message appears often enough with false positives that Norton/Symantec have a special website to report this to get your domain/site whitelisted!
As a first step, please run a malware test and confirm there are no issues. If you using self-managed platforms like WordPress then these issues can happen.
Use this free tool to test your malware issues. Please note: This is not conclusive test and your site might still have issues.
Addressing the Norton Warning…
Here’s how to test if your domain or site is affected…
Please replace domain.com with your domain. Test your subdomains as well esp. if using custom domains with a page builder and/or LeadsHook
In case your website is listed, then here’s how to remove it:
Step 1: Whitelist Your Website
Norton’s Complete Instructions:
There are 2 methods of verification.
We’ll show you how to use Method 1: Adding a meta name tag to your LeadsHook decision trees. You should repeat this for all other pages.
<meta name=“norton-safeweb-site-verification” >
You can confirm meta tag appears under the HEAD section of your decision trees…
Step 2: Submit Your Domains For Review.
Here’s a short discussion on the issue: