In today's busy world of online communication and transaction thousands of messages consisting of sensitive data are sent across the Internet daily.
Email is more like a postcard than a sealed envelope.
Anyone who has access to a computer the mail passes through can read the data unless it is protected. PGP was created by Philip Zimmermann and has become the standard program for secure email and file encryption on the Internet. In this guide, you will learn what PGP is, what powers it, and how to get it on your computer. However, this file does not cover the actual installation process. PGP is a public-key cryptosystem.