Norton in the system tray question help needed

Good Day all

 

I have recently purchased norton 360 Premier a couple weeks ago and since yesterday I've noticed the icon has changed from the normal circle to a half a circle and a squiggly line * (see picture below icon is cicrled in red).... the status still has a green tick so i guess im protected but does anyone know what the icon means thanks in advance

 

norton360.png