PowerShell SecretManagement module provides a convenient way for a user to store and retrieve secrets. The secrets are stored in SecretManagement extension vaults. An extension vault is a PowerShell module that has been registered to SecretManagement, and exports five module functions required by SecretManagement. An extension vault can store secrets locally or remotely. Extension vaults are registered to the current logged in user context, and are available only to that user.
Microsoft.PowerShell.SecretManagement Module

Prerequisites

Install the modules

Install-Module Microsoft.PowerShell.SecretManagement, Microsoft.PowerShell.SecretStore

Create a vault

Register-SecretVault -Name SecretStore -ModuleName Microsoft.PowerShell.SecretStore -DefaultVault

Commands

Store creds in the vault

$Creds = Get-Credential
Set-Secret -Name Client -Secret $Creds

Connect with stored creds

This only works if they are not using modern authentication

Connect-ExchangeOnline -Credential (Get-Secret -Name Client)

Check existing stored creds

Get-SecretInfo

Resources

Stop typing PowerShell credentials in demos using PowerShell SecretManagement

Microsoft.PowerShell.SecretManagement Module