You are thinking of the traditional garage made or botnet data thief virus that gets instantly detected and patched. You might want to brush up on the reality of actual state-level cybercrime or cyberwarfare.
I explained myself more fully in the other thread.
http://bitcointalk.org/index.php?topic=111.msg39486#msg39486I know what You mean. I can still either run bitcoin as a different user, or better: run bitcoin in an encrypted virtual machine.
This practically takes the risk of any hack down to zero.
That attacker would have to
0) Find a MASSIVE way to attack everybody at once before the 0-day is detected (not an easy thing to do).
1) Crack my web browser (with Noscrtipt/Flashblock/Adblock installed, so it is not an easy task either)
2) Find the correct virtual machine
3) Hack into the virtual machine, breaking it's security also.
I
**seriously doubt** that any 0-day will ever be able to do that.
And about Stuxnet: It ran on Windows. I don't put "windows" and "security" in one sentence.