Interesting concept, but I'm skeptical how successful it can be. Banks are trying to get more money out of customers, in large part, to compensate for the costs of cyber-theft. Banks would rather reimburse your stolen money and recapture it through xyz fee, than lose your confidence.

Simple does nothing to solve the bigger issue of our insecure networks. From what I've seen, they're no different from any other company offering online banking services. Add in the fact that they don't have any physical collateral, and maybe they're even more vulnerable than traditional banks...