Question

True or false? because you have made it a practice to never access the internet while your personal database is open, you can rest assured that your database would likely not be vulnerable to any compromises.

Answer 1

That statement is false
As soon as a hacker successfully penetrate your system, that hacker could obtain access to every part of your computer, including all your personal databases. So, not opening your database while online will not protect you from the potential of intrusion.