The main culptrit for this is the seal on the high level brake light, assuming your Note is the E11 version.
Search this forum at top of page and you will see it's a common fault.
Only problem is that the new gasket , IF you can fine one, is rather expensive for a bit of foam ( around £18 ).
Hope it holds.
When i had a Note i took the high level brake light out and cleaned it then applied a bead of clear silicone and then let it dry overnight before putting it back on the car.
The bead acted like a rubber gasket plus, as it was dry, it didn't stick to the car if i ever needed to remove it later on.