When Windows was the predominant desktop OS in the 90s and maybe early 00s (ok, maybe still is), it was so badly insecure that you could be pretty much sure that it would be easy to compromise.

That's when firewalls were widely deployed to provide some layer of protection.

So you can ask yourself, what is the (possibly metaphorical) firewall in the software you depend on?

Is there any way you can decrease attack surface, separate out the most important data in extra-secure (and thus less accessible) systems?