Fascinating, although admittedly highbrow, discussion on the history of cryptography from the BBC. If you are outside of the UK and don't know how to access BBC content you need to spend a bit more time browsing the Null-Byte forums ;-) http://www.bbc.co.uk/programmes/b06mtms8
Want to start making money as a white hat hacker? Jump-start your hacking career with our 2020 Premium Ethical Hacking Certification Training Bundle from the new Null Byte Shop and get over 60 hours of training from cybersecurity professionals.
Other worthwhile deals to check out: