Remove Any Explicitly Defined Permissions for EVERYONE Security Principal

Remove_EVERYONE.ps1

# this removes only non-inherited "EVERYONE" user recursively from folders
# execute this from the starting directory

gci -Recurse -Directory | %{
    $Descriptor = Get-Acl $_.FullName
    $Access2Remove = $Descriptor.Access | ?{$_.IdentityReference -eq 'Everyone' -and $_.IsInherited -eq $false} 
    if($Access2Remove){
        $Descriptor.RemoveAccessRule($Access2Remove)    
        Set-Acl -Path $_.FullName -AclObject $Descriptor 
    }
}