Microsoft Entra ID

Protect against telephony fraud with your own telephony provider

11 November 2026Doc update+12 / −10 lines

In brief

The article replaces “telecom provider” with “telephony provider” across its title, guidance, table, and support references. Related link labels and the FAQ and Security Store links were also updated.

What Entra admins need to know

Administrators should use the updated terminology and links when following or sharing CYOT guidance. No action is required.

This editorial summary was generated by AI from the documentation changes. Verify important details in the full Microsoft Learn article.

Documentation change

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Protect against telephony fraud with your own telecomtelephony provider

With Choose Your Own Telephony Provider (CYOT), SMS and voice traffic runs through your own ~~telecom~~telephony provider account. You control the fraud protections, allowed destinations, and spending limits that match your organization's traffic and risk profile.

|---|---| | Microsoft | Protects code generation and validation in Microsoft Entra ID, and the handoff to your endpoint. | | Your organization | Manages the provider account, secures the integration, and configures fraud controls. | | Telephony provider | Delivers SMS and voice, and offers fraud, destination, and spending controls. |

Respond to suspected fraud

Contact your ~~telecom~~telephony provider to review the affected traffic.
Restrict the affected destinations, channels, or usage with your provider's controls.
Investigate the requests using the Microsoft Entra audit logs, the Function App logs, and your provider's records.
Update your protections before you restore traffic.

Issue	Contact
Fraud, provider account restrictions, delivery, or charges	Your ~~telecom~~telephony provider. Find contact details in the provider's Microsoft Security Store listing.
Microsoft Entra authentication, code validation, or the handoff to your endpoint	Microsoft Support. See Find help and get support for Microsoft Entra.

Related content

@@ -1,5 +1,5 @@ ----title: Protect against telephony fraud with your own telecom provider+title: Protect against telephony fraud with your own telephony provider description: Configure provider fraud protections, destination and spending controls, secure your CYOT integration, monitor unusual activity, and respond to suspected fraud. ms.topic: how-to ms.date: 10/30/2026@@ -8,12 +8,14 @@ ai-usage: ai-assisted # Customer intent: As an identity administrator, I want to prevent telephony fraud and configure appropriate protections for my CYOT integration. --- -# Protect against telephony fraud with your own telecom provider+# Protect against telephony fraud with your own telephony provider++<a id="protect-against-telephony-fraud-with-your-own-telecom-provider"></a>  <a id="prevent-telephony-fraud-and-manage-costs"></a> <a id="prevent-telephony-fraud-when-using-your-own-telecom-provider"></a> -With Choose Your Own Telephony Provider (CYOT), SMS and voice traffic runs through your own telecom provider account. You control the fraud protections, allowed destinations, and spending limits that match your organization's traffic and risk profile.+With Choose Your Own Telephony Provider (CYOT), SMS and voice traffic runs through your own telephony provider account. You control the fraud protections, allowed destinations, and spending limits that match your organization's traffic and risk profile.  > [!IMPORTANT] > Set up your provider's fraud and spending controls before you move production traffic to CYOT.@@ -26,7 +28,7 @@ With Choose Your Own Telephony Provider (CYOT), SMS and voice traffic runs throu |---|---| | Microsoft | Protects code generation and validation in Microsoft Entra ID, and the handoff to your endpoint. | | Your organization | Manages the provider account, secures the integration, and configures fraud controls. |-| Telecom provider | Delivers SMS and voice, and offers fraud, destination, and spending controls. |+| Telephony provider | Delivers SMS and voice, and offers fraud, destination, and spending controls. |  <a id="confirm-provider-controls"></a> <a id="distinguish-alerts-from-spending-caps"></a>@@ -62,7 +64,7 @@ Review SMS and voice volume in your provider's usage reports. A sudden increase  ## Respond to suspected fraud -1. Contact your telecom provider to review the affected traffic.+1. Contact your telephony provider to review the affected traffic. 1. Restrict the affected destinations, channels, or usage with your provider's controls. 1. Investigate the requests using the Microsoft Entra audit logs, the Function App logs, and your provider's records. 1. Update your protections before you restore traffic.@@ -73,15 +75,15 @@ Review SMS and voice volume in your provider's usage reports. A sudden increase  | Issue | Contact | |---|---|-| Fraud, provider account restrictions, delivery, or charges | Your telecom provider. Find contact details in the provider's [Microsoft Security Store](https://securitystore.microsoft.com/) listing. |+| Fraud, provider account restrictions, delivery, or charges | Your telephony provider. Find contact details in the provider's [Microsoft Security Store](https://securitystore.microsoft.com/) listing. | | Microsoft Entra authentication, code validation, or the handoff to your endpoint | Microsoft Support. See [Find help and get support for Microsoft Entra](/entra/fundamentals/how-to-get-support). |  <a id="estimate-provider-and-azure-charges-separately"></a>  ## Related content -- [Set up SMS and voice with your own telecom provider in the Microsoft Entra admin center](choose-your-own-telephony-set-up.md).-- [Monitor and troubleshoot SMS and voice with your own telecom provider](choose-your-own-telephony-troubleshoot.md#monitor-and-troubleshoot-your-own-telephony-provider).+- [Set up SMS and voice with your own telephony provider in the Microsoft Entra admin center](choose-your-own-telephony-set-up.md).+- [Troubleshoot SMS and voice with your own telephony provider](choose-your-own-telephony-troubleshoot.md#monitor-and-troubleshoot-your-own-telephony-provider). - [Plan for resiliency and high availability](choose-your-own-telephony-reliability.md).-- [Estimate telecom provider and Azure hosting costs](phone-providers-faq.yml#how-much-does-choose-your-own-telephony-provider-cost).-- [Security Store](/security/store/what-is-security-store).+- [Frequently asked questions](phone-providers-faq.yml#how-much-does-choose-your-own-telephony-provider-cost).+- [What is Microsoft Security Store?](/security/store/what-is-security-store).