You need to contact Norton about that one. I used it for the first couple of years I played this game and never received such a message. I now use McAfee and have had no problems.
Would you please check your Norton program? There should be a place there that will allow you to insert the website as a trusted site. I have used Norton before, for years. Please let me know if that resolves the problem.
Every thing is suspicious according to Norton, it's a nitemare antivirus, it's heavy on cp usage and it is also a nitemare to get rid of even after uninstall it leaves bits in your core which are still active.
I know it actually caused 100% disc usage just after subscription finished!!
Guessing there's still stuff to find and remove- Trouble is these things activate other things and will have changed other actions
Currently have no sound lol!
You can also try CCleaner. It's free and does a great job of cleaning your disk drive. It cleans history, cookies, cache; basically whatever you tell it to. It will also clean your registry of anything left behind by programs you uninstalled.