During the 1990s the ATM system (hole-in-the-wall cash machines) had a massive critical flaw in the way that PIN numbers were generated, and the one barrister who could force the banks to take action was taken off the case.

This sounds like a pretty dull read, but it’s weirdly gripping. If you’ve got a few minutes on a break I highly suggest going through this article just to see how unsecure our financial institutions were for over a decade and how little they did about it:

http://www.theregister.co.uk/2005/10/21/phantoms_and_rogues/

Interesting stuff.