More than enough evidence for a return to non electronic secure banking, replete with cheque accounts and overnight couriers, which could be replaced by old fashioned vacuum assisted transfer pipelines?

And although not completely failsafe, not like a, please do step in open door, that is today's high tech banking and or cash transfers?

Which can and do take far longer than the back to the future, old antiquated money and data transfers?

Other than that, smartcards with encrypted, regularly rotated secret words, pin numbers and complementary biometrics, which might even include DNA?

And just to make the cost of cyber theft incomprehensibly expensive, and take long enough to raise a red flag and automatic tracing, followed by automatic blocking, plug pulling/link shutdowns?

Computer programs that are fast and threaten security, can be more than matched by far faster, more secure quantum mechanics? Crime that pays ought to be replaced by crime that costs and big time!
Alan B.