This is the third of a four-part screencast series on using Windows PowerShell with Microsoft evangelist David Aiken. This screencast takes a look at some of the PowerShell security features that are designed to avoid accidental execution of scripts that have been obtained via email or downloaded from the Internet.
Part 1: Getting started with PowerShell
Part 2: Creating pipelines and interacting with objects
Part 3: PowerShell security features
Part 4: Writing simple scripts and functions