Automating with PowerShell: Increasing the O365 Secure Score

At the start of this week I’ve blogged about reading the secure score and documenting it. This is of course just one part of the new beta Secure Score module. The next one is actually the more fun part; applying the correct security settings to a tenant.

So first things first; The module is still rough around the edges and in beta. It’s mostly used to demonstrate how you can attack reaching a higher score, and actually helping your clients reach a higher level of security.

The SecureScore is just a baseline of added value items you can apply to each tenant. A description of each item can be found here. Don’t rely on just the secure score for your security needs.

So let’s get to increasing the secure score.

Examples

So imagine you want to apply all ‘low impact’ items, to all tenants. This is stuff like having a breakglass account, not allowing OAuth approvals by users, not having password expire policies and setting up a DLP policy that prevents sending out credit card information. You’ll run:


######### Secrets #########
$ApplicationId         = 'ApplicationID'
$ApplicationSecret = 'AppSecret'
$TenantID              = 'YourTenantID'
$RefreshToken = 'RefreshToken'
$ExchangeRefreshToken = 'ExchangeRefreshToken'
$UPN = "YourUPN"
######### Secrets #########
Install-module SecureScore
set-securescore -AllTenants -ControlName LowImpact -upn $upn -ApplicationSecret $ApplicationSecret -ApplicationId $ApplicationId -RefreshToken $RefreshToken -ExchangeToken $ExchangeRefreshToken -Confirmed

This loops through all tenants, sets up all LowImpact items without confirmation, and poof. 🙂 But now imagine you are using external tooling for something like MFA enrollment; Microsoft doesn’t know and hasn’t given you the points for it, so lets correct that:


######### Secrets #########
$ApplicationId         = 'ApplicationID'
$ApplicationSecret     = 'AppSecret'
$TenantID              = 'YourTenantID'
$RefreshToken          = 'RefreshToken'
$ExchangeRefreshToken = 'ExchangeRefreshToken'
$UPN = "YourUPN"
######### Secrets #########
Install-Module SecureScore
set-securescore -AllTenants -ControlName MFARegistrationV2 -upn $upn -ApplicationSecret $ApplicationSecret -ApplicationId $ApplicationId -RefreshToken $RefreshToken -ExchangeToken $ExchangeRefreshToken -Confirmed -ExternallyResolved

Using the parameter -ExternallyResolved you won’t apply the actual fix, and instead just tell Microsoft “Hey, we’ve solved this using another product. Please give us the points”. Pretty cool when you are using ADFS with a own MFA product, or just DUO or the likes.

But imagine you’re not sure what an item does, and what effect it has on users. You can run the following command on a single tenant to get a little explanation:

set-securescore -TenantID "Sometenant.onmicrosoft.com" -ControlName AdminMFAV2 -upn $upn -ApplicationSecret $ApplicationSecret -ApplicationId $ApplicationId -RefreshToken $RefreshToken -ExchangeToken $ExchangeRefreshToken

Result:
WARNING: This will enable multi-factor authentication for all admin users, and prompt them at first logon to configure MFA. Do you want to continue?

So, there’s a lot of stuff to play with in this module and I’ll be adding a lot of functionality in the future for other payloads. I hope you guys enjoy it and if you have any issues, let me know! 🙂

And that’s it! as always, Happy PowerShelling!

Recent Articles

Automating with PowerShell: making stolen tokens useless with Global Secure Access

Last week I watched Merill Fernando talk to Alex Pavlovsky and Marilee Tuscak from the Entra team about something I’d kinda put under the “needs a GSA licence” branch and i’d check it out later, turns out that like most people, I half-assed the documentation and it turns out it doesn’t. There’s two features that come with any P1 license; Compliant network check and Source IP Restoration. So BP, P1, or even frontline worker licenses already have this.

CIPP ❤️ #IntuneForMSPs

We’re Joining #IntuneForMSPs 🎉

Being invited by Microsoft to join a global initiative is a big moment for us, and we want to be clear about why it matters. #IntuneForMSPs is Microsoft’s program to help MSPs deliver Microsoft 365, Intune, and Copilot services at scale, and CIPP is now part of it, bringing the largest MSP community in the channel directly to Microsoft.

The return of CyberDrain CTF

CyberDrain CTF returns! (and so do I!)

It’s been since september that I actually picked up a digital pen equivalent and wrote anything down. This was due to me being busy with life but also my side projects like CIPP. I’m trying to get back into the game of scripting and blogging about these scripts. There’s still so much to automate and so little time, right? ;)