That's what I was referring to. Let's assume you store your scanned PDFs on your personal laptop and that gets compromised. Now the attacker has your medical history, tax and bank statements, contracts, ... your whole life to pick and choose the ransom amount.
I'm getting more and more to the conclusion that if you do not want something to be published on the Internet, do not put it on an Internet-connected device, smartphone or laptop -- or put the other way around: "expect anything that you keep on an Internet connected device (or cloud) to be potentially stolen from you". Too paranoid?