check before: 2024-10-01
Product:
Teams
Platform:
Mac, Online, Windows Desktop, World tenant
Status:
Launched
Change type:
Admin impact, New feature, Updated message, User impact
Links:
Details:
Summary:
Microsoft Teams is introducing a new security feature to alert users of potential brand impersonation in Teams Chat, especially during initial contact from external domains. Rollout begins late October 2024 for Targeted Release and mid-November 2024 for General Availability, completing by mid-February 2025. This feature will be enabled by default with no admin configuration needed.
Details:
Updated January 24, 2025: We have updated the rollout timeline below. Thank you for your patience.
Coming soon to Microsoft Teams: A new feature to enhance the security in external collaboration. If your company allows external domains to contact your users in Teams, we will identify if an external user is impersonating a brand commonly targeted by phishing attacks during their initial contact with your user through Teams Chat. If we detect potential impersonation, we will show a high-risk alert to the user, notifying them to check for suspicious name/email and proceed with caution.
This message is associated with Microsoft 365 Roadmap ID 421190.
[When this will happen:]
Targeted Release: We will begin rolling out late October 2024 and expect to complete by late October 2024.
General Availability (Worldwide): We will begin rolling out mid-November 2024 and expect to complete by mid-February 2025 (previously mid-January).
Change Category:
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Scope:
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Release Phase:
Standard Release
Created:
2024-10-15
updated:
2025-02-11
Task Type
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Docu to Check
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MS How does it affect me
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MS Preperations
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MS Urgency
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MS workload name
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linked item details
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Pictures
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summary for non-techies**
Microsoft Teams is introducing a new security feature that alerts users to potential brand impersonation in Teams Chat, automatically enabled from late October 2024 to mid-February 2025, requiring no setup from IT administrators, and includes audit logs for admins to review impersonation attempts.
Direct effects for Operations**
User Confusion and Frustration
Users may experience confusion and frustration due to the new high-risk alert system, especially if they are not adequately informed about the changes. This could lead to delays in communication and decision-making as users may hesitate to accept messages from external contacts.
- roles: End Users, Customer Support Representatives
- references: https://www.microsoft.com/microsoft-365/roadmap?filters=&searchterms=421190
Increased Support Tickets
The introduction of the impersonation alert may lead to an increase in support tickets as users seek clarification on the new feature and how to handle alerts, potentially overwhelming the IT support team.
- roles: IT Support Staff, Help Desk Technicians
- references: https://www.microsoft.com/microsoft-365/roadmap?filters=&searchterms=421190
Operational Delays
If users are not prepared for the new Accept/Block flow and the associated risks, it may cause operational delays as users take extra time to verify the legitimacy of external messages, impacting productivity.
- roles: Project Managers, Team Leaders
- references: https://www.microsoft.com/microsoft-365/roadmap?filters=&searchterms=421190
Configutation Options**
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Opportunities**
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Potentional Risks**
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IT Security**
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explanation for non-techies**
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** AI generated content. This information must be reviewed before use.
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change history
| Date | Property | old | new |
| 2025-02-11 | MC Feature Status | Rolling out | Launched |
| 2025-01-25 | MC Last Updated | 01/06/2025 01:37:48 | 2025-01-24T23:53:44Z |
| 2025-01-25 | MC Messages | Updated January 5, 2025: We have updated the rollout timeline below. Thank you for your patience.
Coming soon to Microsoft Teams: A new feature to enhance the security in external collaboration. If your company allows external domains to contact your users in Teams, we will identify if an external user is impersonating a brand commonly targeted by phishing attacks during their initial contact with your user through Teams Chat. If we detect potential impersonation, we will show a high-risk alert to the user, notifying them to check for suspicious name/email and proceed with caution. This message is associated with Microsoft 365 Roadmap ID 421190. [When this will happen:] Targeted Release: We will begin rolling out late October 2024 and expect to complete by late October 2024. General Availability (Worldwide): We will begin rolling out mid-November 2024 and expect to complete by mid-January 2025 (previously mid-December). | Updated January 24, 2025: We have updated the rollout timeline below. Thank you for your patience.
Coming soon to Microsoft Teams: A new feature to enhance the security in external collaboration. If your company allows external domains to contact your users in Teams, we will identify if an external user is impersonating a brand commonly targeted by phishing attacks during their initial contact with your user through Teams Chat. If we detect potential impersonation, we will show a high-risk alert to the user, notifying them to check for suspicious name/email and proceed with caution. This message is associated with Microsoft 365 Roadmap ID 421190. [When this will happen:] Targeted Release: We will begin rolling out late October 2024 and expect to complete by late October 2024. General Availability (Worldwide): We will begin rolling out mid-November 2024 and expect to complete by mid-February 2025 (previously mid-January). |
| 2025-01-25 | MC End Time | 02/28/2025 09:00:00 | 2025-04-07T10:00:00Z |
| 2025-01-25 | MC Summary | Microsoft Teams is introducing a new security feature to alert users of potential brand impersonation in Teams Chat, especially during initial contact from external domains. Rollout begins late October 2024 for Targeted Release and mid-November 2024 for General Availability, completing by mid-January 2025. This feature will be enabled by default with no admin configuration needed. | Microsoft Teams is introducing a new security feature to alert users of potential brand impersonation in Teams Chat, especially during initial contact from external domains. Rollout begins late October 2024 for Targeted Release and mid-November 2024 for General Availability, completing by mid-February 2025. This feature will be enabled by default with no admin configuration needed. |
| 2025-01-08 | MC Feature Ring | Standard Release, Targeted Release | Standard Release |
| 2025-01-08 | MC Feature Status | Launched | Rolling out |
| 2025-01-06 | MC Messages | Updated November 27, 2024: We have updated the rollout timeline below. Thank you for your patience.
Coming soon to Microsoft Teams: A new feature to enhance the security in external collaboration. If your company allows external domains to contact your users in Teams, we will identify if an external user is impersonating a brand commonly targeted by phishing attacks during their initial contact with your user through Teams Chat. If we detect potential impersonation, we will show a high-risk alert to the user, notifying them to check for suspicious name/email and proceed with caution. This message is associated with Microsoft 365 Roadmap ID 421190. [When this will happen:] Targeted Release: We will begin rolling out late October 2024 and expect to complete by late October 2024. General Availability (Worldwide): We will begin rolling out mid-November 2024 and expect to complete by mid-December 2024 (previously mid-November). | Updated January 5, 2025: We have updated the rollout timeline below. Thank you for your patience.
Coming soon to Microsoft Teams: A new feature to enhance the security in external collaboration. If your company allows external domains to contact your users in Teams, we will identify if an external user is impersonating a brand commonly targeted by phishing attacks during their initial contact with your user through Teams Chat. If we detect potential impersonation, we will show a high-risk alert to the user, notifying them to check for suspicious name/email and proceed with caution. This message is associated with Microsoft 365 Roadmap ID 421190. [When this will happen:] Targeted Release: We will begin rolling out late October 2024 and expect to complete by late October 2024. General Availability (Worldwide): We will begin rolling out mid-November 2024 and expect to complete by mid-January 2025 (previously mid-December). |
| 2025-01-06 | MC Last Updated | 11/28/2024 00:36:25 | 2025-01-06T01:37:48Z |
| 2025-01-06 | MC Summary | Microsoft Teams is introducing a new security feature to alert users of potential brand impersonation in Teams Chat, particularly during initial contact from external domains. This feature will be automatically enabled, with rollout phases starting late October 2024 for Targeted Release and mid-November 2024 for General Availability. No admin configuration is needed, and users will be prompted with high-risk warnings when impersonation is detected. | Microsoft Teams is introducing a new security feature to alert users of potential brand impersonation in Teams Chat, especially during initial contact from external domains. Rollout begins late October 2024 for Targeted Release and mid-November 2024 for General Availability, completing by mid-January 2025. This feature will be enabled by default with no admin configuration needed. |
| 2024-11-28 | MC Messages | Coming soon to Microsoft Teams: A new feature to enhance the security in external collaboration. If your company allows external domains to contact your users in Teams, we will identify if an external user is impersonating a brand commonly targeted by phishing attacks during their initial contact with your user through Teams Chat. If we detect potential impersonation, we will show a high-risk alert to the user, notifying them to check for suspicious name/email and proceed with caution.
This message is associated with Microsoft 365 Roadmap ID 421190. [When this will happen:] Targeted Release: We will begin rolling out late October 2024 and expect to complete by late October 2024. General Availability (Worldwide): We will begin rolling out mid-November 2024 and expect to complete by mid-November 2024. | Updated November 27, 2024: We have updated the rollout timeline below. Thank you for your patience.
Coming soon to Microsoft Teams: A new feature to enhance the security in external collaboration. If your company allows external domains to contact your users in Teams, we will identify if an external user is impersonating a brand commonly targeted by phishing attacks during their initial contact with your user through Teams Chat. If we detect potential impersonation, we will show a high-risk alert to the user, notifying them to check for suspicious name/email and proceed with caution. This message is associated with Microsoft 365 Roadmap ID 421190. [When this will happen:] Targeted Release: We will begin rolling out late October 2024 and expect to complete by late October 2024. General Availability (Worldwide): We will begin rolling out mid-November 2024 and expect to complete by mid-December 2024 (previously mid-November). |
| 2024-11-28 | MC Title | Microsoft Teams: Brand impersonation protection for Teams Chat | (Updated) Microsoft Teams: Brand impersonation protection for Teams Chat |
| 2024-11-28 | MC Last Updated | 10/15/2024 00:53:15 | 2024-11-28T00:36:25Z |
| 2024-11-28 | MC MessageTagNames | New feature, User impact, Admin impact | Updated message, New feature, User impact, Admin impact |
| 2024-11-06 | MC Feature Ring | Targeted Release | Standard Release, Targeted Release |
| 2024-11-06 | MC Feature Status | Rolling out | Launched |
| 2024-10-31 | MC Feature Ring | Targeted Release | |
| 2024-10-31 | MC Feature Status | Scheduled | Rolling out |
Last updated 3 weeks ago
