MS TechNet UK blog : A history of messaging and encryption

This is just a quick note to say that I have just had a blog post published on a Microsoft web-site. It is a very selective history of messaging and encryption, using Visio SmartShapes to demonstrate some aspects of this :
https://blogs.technet.microsoft.com/uktechnet/2016/05/27/a-history-of-messaging-and-encryption/

You too an visit The National Museum of Computing at http://www.tnmoc.org/