# The authentication methods SMS, Voice Call, and Email One-Time Passcode (OTP) SHALL be disabled

The authentication methods SMS, Voice Call, and Email One-Time Passcode (OTP) SHALL be disabled.

Source: https://maester.dev/docs/tests/CISA.MS.AAD.3.5

<!-- This file is generated by website/scripts/generate-test-docs.mjs. Do not edit manually. -->

<div class="test-byline"><div class="test-byline-avatars"><a class="test-byline-avatar test-byline-avatar--author" href="/contributors/soulemike" title="Michael Soule · Original author"><img src="https://github.com/soulemike.png" alt="Michael Soule" width="28" height="28" loading="lazy" decoding="async" /></a><a class="test-byline-avatar" href="/contributors/henrikpiecha" title="Henrik Piecha · Co-contributor"><img src="https://github.com/HenrikPiecha.png" alt="Henrik Piecha" width="28" height="28" loading="lazy" decoding="async" /></a></div><div class="test-byline-meta"><span class="test-byline-text">Contributed by <a href="/contributors/soulemike">Michael Soule</a> with <a href="/contributors/henrikpiecha">Henrik Piecha</a></span><a class="test-byline-link" href="/contributors">All contributors →</a></div></div>

<p class="test-part">Part of <a href="/docs/tests/cisa">CISA</a> · Entra ID · Authentication methods · <a href="/docs/tests">All checks</a></p>

```powershell title="Run this check"
Invoke-Maester -TestId CISA.MS.AAD.3.5
```

## Overview

The authentication methods SMS, Voice Call, and Email One-Time Passcode (OTP) SHALL be disabled.

Rationale: SMS, voice call, and email OTP are the weakest authenticators. This policy forces users to use stronger MFA methods.

#### Remediation action:

If phishing-resistant MFA has not been deployed yet and Microsoft Authenticator is in use, configure Authenticator to display context information to users when they log in.

1. In **Entra ID**, click **Security** > **[Authentication methods](https://entra.microsoft.com/#view/Microsoft_AAD_IAM/AuthenticationMethodsMenuBlade/~/AdminAuthMethods/fromNav/Identity)**
2. Click on the **SMS**, **Voice Call**, and **Email OTP** authentication methods and disable each of them. Their statuses should be **Enabled** > **No** on the **Authentication methods** > **Policies** page.

#### Related links

* [Entra admin portal - Authentication methods](https://entra.microsoft.com/#view/Microsoft_AAD_IAM/AuthenticationMethodsMenuBlade/~/AdminAuthMethods/fromNav/Identity)
* [CISA Strong Authentication & Secure Registration - MS.AAD.3.5v1](https://github.com/cisagov/ScubaGear/blob/main/PowerShell/ScubaGear/baselines/aad.md#msaad35v1)
* [CISA ScubaGear Rego Reference](https://github.com/cisagov/ScubaGear/blob/main/PowerShell/ScubaGear/Rego/AADConfig.rego#L307)

## Details

<details>
<summary>Every attribute of this check</summary>

| Field | Value |
| --- | --- |
| Test ID | CISA.MS.AAD.3.5 |
| Severity | High |
| Suite | CISA |
| Product | Entra ID |
| Feature | Authentication methods |
| Area | Authentication |
| Resource type | Tenant |
| User impact | Medium |
| Implementation cost | Medium |
| MITRE ATT&CK | T1566.002 Spearphishing Link, T1621 Multi-Factor Authentication Request Generation, T1111 Multi-Factor Authentication Interception |
| Supports benchmark | CISA SCuBA Secure Configuration Baselines for Microsoft 365 (version ScubaGear main, 2026-10-11), requirement MS.AAD.3.5 |
| Criticality | SHALL |
| Upstream requirement | MS.AAD.3.5v2 |
| Supports controls | cisa-scuba:MS.AAD.3.5, nist-800-53-r5:CM-7b, nist-800-53-r5:IA-5c |
| PowerShell test | [Test-MtCisaWeakFactor](https://github.com/maester365/maester/blob/main/tests/cisa/entra/Test.CISA.MS.AAD.3.5.ps1) |
| Services | Graph |
| Compatible licenses | AAD_PREMIUM |

</details>

## Source

- Test: [`tests/cisa/entra/Test.CISA.MS.AAD.3.5.ps1`](https://github.com/maester365/maester/blob/main/tests/cisa/entra/Test.CISA.MS.AAD.3.5.ps1)
- Documentation: [`tests/cisa/entra/Test.CISA.MS.AAD.3.5.md`](https://github.com/maester365/maester/blob/main/tests/cisa/entra/Test.CISA.MS.AAD.3.5.md)