Anyone who accesses their bank account, brokerage account or uses a credit card over the Internet is also at risk.
That is true; I’m especially nervous about online banking; I have one credit card I use for online stuff that I can cancel anytime I need to;
But those two things would be a risk no matter how secure I make my home network.
We have one card just for transactions via the 'net. It has a very low limit on it so if it gets clipped, damage is limited.