Automatisierter USB Virenscan, aber wie?

if(!(new-object System.Security.Principal.WindowsPrincipal([System.Security.Principal.WindowsIdentity]::GetCurrent())).IsInRole(544)){start powershell -Verb runas -ArgumentList '-File',$MyInvocation.MyCommand.Definition;exit}  
Unregister-Event NewDisk -EA 0
Register-WmiEvent -Query "Select * From __InstanceCreationEvent within 1 where TargetInstance ISA 'Win32_LogicalDisk' and TargetInstance.DriveType = 2" -SourceIdentifier NewDisk -Action {    
  write-host "New removable disk detected." -f Green    
  $driveletter = $Event.SourceEventArgs.NewEvent.TargetInstance.DeviceId
  write-host "Scanning drive '$driveletter' ... " -NoNewline    
  start-process "$env:ProgramFiles\Windows Defender\MpCmdRun.exe" -ArgumentList "-scan -scantype 3 -file $driveletter" -wait  
  write-host "finished. Waiting for new disk ..."    
}
write-host "Waiting for new disk ..."    
while($true){sleep 1}