... 1Introduction to PGP – SANS GIAC LevelOne -© 2000, 20011PGP - Step by Step Hello, my name is Stephen Northcutt, and in our next hour together we will be discussing the application ... icon tool bar. These icons are used by clicking on the icon. Once you click on the icon, it stays depressed (appears depressed). When you send the message by clicking on the send button, your ... trust”.For PGP, a certificate is valid if it is signed by a trusted individual whose certificate is valid, or (and this is a huge point) it is signed by a group of people that are generally trusted...