norton black War thunder!what? what locked it?

hi, today I played at war thunder ( 2 hours) (zero problem) and after in subnautica (30 min)...i Come out from
subnautica and I stay on the desktop for a few minutes... 

When Norton warns me..for this ...photo

 

What the hell happened?
 Is a false positive?I can be quiet?

 

PS Did not put anything into quarantine, only blocked
 

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