So you're telling me that if each Bitcoin is worth $1 million dollars ransomware or other sophisticated malware and spyware wont be developed to target Bitcoin users? This isn't paranoia it's common sense. Governments may or may not have hit any of us already with advanced persistent threats. Do you think they'll tell us?
You're a persistent one.
I'm just telling you that ransomware will not magically become more efficient than it is now just because people acknowledge bitcoin being worth more than murrikan dollar.
Ransomware today is a pain. Ransomware tomorrow will be a pain. Ransomware won't be more dangerous tomorrow than it is today.
Your coins are safe as long as you have a backup+strong passphrase or cold wallets.
Just smile and go to sleep.
I think Keyhotee is part of the solution to some of these problems. Look at this:
https://www.youtube.com/watch?feature=player_detailpage&v=3pZaTdEtK-8The other idea I heard which was very good was the Bitcoin identity protocol. Both of those ideas need to be implemented immediately.
And I don't assume my coins are safe enough. I don't trust hardware or software but at this point we have to because this is all we have. Bitcoins are not currently worth enough money for sophisticated and targeted attacks and I don't have a lot of Bitcoins anyway to be worth attacking. But some people have 1000 coins or 10,000 coins and they'll be in danger today. In the future people having just a few coins will have to worry about being cyber robbed.
No it's not easy to defend yourself against extortion or identity theft. It's almost impossible to be sure your computer is malware/spyware free and if a government wants to spy they can see everything. We can only do the best we can with our software implementations and use stuff like raspberry pi for hardware. Paranoia is actually necessary to defend valuable information which is why we typically pay experts to do it.