*[How safe is Gnuk against side channel attacks, USB sniffer, or electron/tunneling microscope? - FST-01 Q&A Forum](http://no-passwd.net/askbot/question/33/how-safe-is-gnuk-against-side-channel-attacks-usb/).
*[How does Gnuk protect against attacks to extract private keys? - FST-01 Q&A Forum](http://no-passwd.net/askbot/question/32/how-does-gnuk-protect-against-attacks-to-extract/).