Intrusion blocked when using incognito mode in chrome?

Hello, today I started getting this weird intrusion attempt from nossairt.net whenever I use incognito mode or while using it time to time. I've tried doing full scan using norton but nothing really pops up. I only seem to be getting intrusion attempt blocked by norton notification only when I use incognito mode so I could just stop using it but is there a way to stop this??

 

thank you