Jana Sattainathan has us hold our horses:
You might want to read this to the end! You are into PowerShell and have a ton of scripts. The problem is some of them run things that are not meant to be run at any time by anyone except you when you first set it up – like dropping the entire contents of a folder and sub-folders to reinitialize.
Once you realize that you accidentally hit F5 on your “DropFolderContents.ps1” script, it is already too late. The damage is done.
Click through for several techniques to prevent this.