Saving credentials and secrets inside your code is a very bad idea and should be avoided. PowerShell has built-in commands to export and import encrypted data in your code.

There might be a lot of ways to achieve this, but this is how I like to do it. This is very elegant and easy to implement.

Let’s say we have a secret password that we want to secure and avoid saving in the source code.

$secretPW = “SecretPassword” | ConvertTo-SecureString -AsPlainText -Force

We can export this variable to an encrypted XML file with

$secretPW | Export-Clixml -Path .\secret.xml

The password is not human readable:

To import this file use

$secretPW = Import-Clixml -Path .\secret.xml

The plain-text password can be obtained through (I had to split the command into two lines)

[System.Runtime.InteropServices.Marshal]::
PtrToStringAuto([System.Runtime.InteropServices.Marshal]::SecureStringToBSTR($secretPW))

Just outputting the variable won’t show the password, because the variable is a System.Security.SecureString object.

Credentials can also be saved this way:

$credentials = Get-Credential

You can show the plain-text password with

$credentials.GetNetworkCredential().password

$credentials | Export-Clixml -Path .\credentials.xml

Only the username is shown in clear text.

Same thing again with the import

$credentials = Import-Clixml -Path .\credentials.xml

$credentials.GetNetworkCredential().password

The password can be decrypted by the same user that created the XML file on that specific computer.

References:

https://devblogs.microsoft.com/scripting/decrypt-powershell-secure-string-password/

https://pscustomobject.github.io/powershell/functions/PowerShell-SecureString-To-String/

Hey folks!

Here is a quick way to find inactive AD Users in your environment. Get-ADUser ist the cmdlet we are going to use.

We are getting all users from the highest OU (domain.com) and using the Property LastLogonDate, which will not be returned if not specified in the -Properties parameter. After that a Where statement is going to show users that haven’t logged in since 90 days or more.

Get-ADUser -Filter * -Properties lastlogondate | where { $_.lastlogondate -lt (Get-Date).AddDays(-90) }

We could also specify the OU where the command is going to search:

Get-ADUser -Filter * -Properties lastlogondate -SearchBase “OU=TerminatedEmployees,DC=Company,DC=com”| where { $_.lastlogondate -lt (Get-Date).AddDays(-90) }|select Name,Lastlogondate

There is also the -SearchScope Onelevel parameter to determine that we are not going to search recursively:

Get-ADUser -Filter * -Properties lastlogondate -SearchBase “OU=TerminatedEmployees,DC=Company, DC=com” -SearchScope OneLevel | where { $_.lastlogondate -lt (Get-Date).AddDays(-90) }|select Name,Lastlogondate

Have fun!