You don't have to worry about it.
The best idea is to cut off internet line to secure the maximum safety.
Else, if you connect to internet line, security may be lowered and it is nature.
In case somebody penetrated into your system and broke it, all you have to do is to restore with backup images.
Tha's why everytime I told you to make backup periodically.
If you worry about traffic accident, keep inside home.
If you don't want food poisoning, don't eat anything.