As these Russian hackers become more and more proficient and more numerous (their economy is collapsing and is owned by oligarchs so they need a vocation like hacking), how does this impact the integration of Bitcoin with sites that normally promise their users repudiation, e.g. Paypal??
Thus I suspect we will see Paypal integrate with a hardware wallet soon?
A solution could be a custom ASIC hardware key, wherein the private key is not accessible; it would interface with your (optionally deterministic hierarchical) wallet via USB but you would be require to press a physical button to release signatures.
Are you describing a Trezor?
https://bitcointalk.org/index.php?topic=122438.0A quick glance and that appears to be what I was suggesting.
Such projects can be crowd financed these days with Kickstarter.