Security and Partitions

[encoreuneffort]

Hello,

I have a partition PA on the internal hard drive of my computer.
I can boot on PA and launch a linux distribution.
I also have another data partition PB on the same hard drive.
I assume that my PB partition is not mounted.
If I open an internet connection is my PB partition protected
from an attack ?

Thank.

[Lazydog]

If it is not mounted it should be fine.