Get Current User's Credentials

Credential.ps1

if ($promptForCredentialsInInteractive) 
{
    $user = $env:USERDOMAIN, $env:USERNAME -join '\'
    $cred = (get-credential -UserName $user -Message "Please enter the credentials you wish this script to use when accessing network resources")
    Write-Verbose ("User entered username '{0}'" -f $cred.UserName)
} 
else 
{
    #this doesn't work as some people claim
    #$cred = [System.Net.CredentialCache]::DefaultCredentials
    
    #however you can store an account's password in an enctrypted file
    #and use that.  The file can only be decrypted by the user
    #who created the enctrypted file in the first place.
    $passwordFile = '.\eu_myserviceaccount.txt' #http://stackoverflow.com/questions/6239647/using-powershell-credentials-without-being-prompted-for-a-password
    $username = 'eu\myserviceaccount'
    #read-host -assecurestring | convertfrom-securestring | out-file $passwordFile #use this under the same user who'll be running the script to create secure file
    $password = get-content $passwordFile | ConvertTo-SecureString
    $cred = new-object -typename System.Management.Automation.PSCredential -ArgumentList $username,$password

    
}