{"id":16284,"date":"2026-05-06T02:01:05","date_gmt":"2026-05-05T17:01:05","guid":{"rendered":"https:\/\/m365jp.net\/?p=16284"},"modified":"2026-05-06T02:02:05","modified_gmt":"2026-05-05T17:02:05","slug":"mc1219793-updated-brand-impersonation-protection-for-teams-calling-4","status":"publish","type":"post","link":"https:\/\/m365jp.net\/index.php\/2026-05-06-mc1219793-updated-brand-impersonation-protection-for-teams-calling-4","title":{"rendered":"MC1219793 | (Updated) Brand impersonation protection for Teams Calling"},"content":{"rendered":"<div class=\"postie-post\">\n<div>\n<hr>\n<table id=\"section\">\n<tbody>\n<tr>\n<th width=\"95%\">MC1219793 | (Updated) Brand impersonation protection for Teams Calling<\/th>\n<\/tr>\n<\/tbody>\n<\/table>\n<hr>\n<table id=\"data\">\n<tbody>\n<tr>\n<th>Classification<\/th>\n<td>stayInformed<\/td>\n<\/tr>\n<tr>\n<th>Last Updated<\/th>\n<td>05\/05\/2026 16:43:55<\/td>\n<\/tr>\n<tr>\n<th>Start Time<\/th>\n<td>01\/21\/2026 00:38:47<\/td>\n<\/tr>\n<tr>\n<th>End Time<\/th>\n<td>06\/30\/2026 07:00:00<\/td>\n<\/tr>\n<tr>\n<th>Message Content<\/th>\n<td>\n<p>Updated May 5, 2026: We have updated the timeline. Thank you for your patience.&nbsp;<\/p>\n<p><b>[Introduction]<\/b><\/p>\n<p><b><br \/>  Brand Impersonation Protection<\/b> for Teams Calling adds proactive safeguards against fraudulent or deceptive external callers who attempt to appear as trusted organizations. This helps reduce social-engineering risks and improves tenant security when users   receive first-contact external calls. This update aligns with Microsoft\u2019s ongoing investments in caller identity protection and secure collaboration.<\/p>\n<p>This message is associated with Microsoft 365 Roadmap ID <a href=\"https:\/\/www.microsoft.com\/microsoft-365\/roadmap?filters=&amp;searchterms=543239\" target=\"_blank\">  543239<\/a>.<\/p>\n<p><b>[When this will happen:]<\/b><\/p>\n<p>  Targeted Release: Rollout will begin mid-May 2026 (previously early May)<b>&nbsp;<\/b>and is expected to complete by late May (previously late April)<b>.<\/b><\/p>\n<p>  General Availability: Timelines will be communicated in a future message.<\/p>\n<p><b>[How this affects your organization:]<\/b><\/p>\n<p><b>Who is affected:<\/b><\/p>\n<p>  <\/p>\n<ul>  <\/p>\n<li>All organizations using Microsoft Teams Calling that receive inbound VoIP calls from first-contact external callers.<\/li>\n<p>  <\/ul>\n<p><b>What will happen:<\/b><\/p>\n<p>  <\/p>\n<ul>  <\/p>\n<li>Teams will evaluate inbound calls for signs of brand impersonation.<\/li>\n<p>  <\/p>\n<li>Users will see high-risk call warnings before answering suspicious calls.<\/li>\n<p>  <\/p>\n<li>Warnings may continue during the call if risk signals persist.<\/li>\n<p>  <\/p>\n<li>Users can accept, block, or end the call.<\/li>\n<p>  <\/p>\n<li>The feature will be enabled by default.<\/li>\n<p>  <\/p>\n<li>Existing Teams Calling policies remain unchanged.<\/li>\n<p>  <\/ul>\n<p><b>[What you can do to prepare:]<\/b><\/p>\n<p>  No admin action is required at this time.<\/p>\n<ul>  <\/p>\n<li>Inform helpdesk staff that users may begin seeing high-risk call warnings.<\/li>\n<p>  <\/p>\n<li>Update internal training materials if applicable.<\/li>\n<p>  <\/p>\n<li>Review Microsoft documentation on caller ID security when available.<\/li>\n<\/ul>\n<p>Before rollout, we will update this post with new documentation.<\/p>\n<ul>  <\/ul>\n<p><b>[Compliance considerations:]<\/b><\/p>\n<p>  No compliance considerations identified, review as appropriate for your organization.<\/p>\n<\/td>\n<\/tr>\n<tr>\n<th>Machine Translation<\/th>\n<td>\n<p>2026\u5e745\u67085\u65e5\u66f4\u65b0:\u30bf\u30a4\u30e0\u30e9\u30a4\u30f3\u3092\u66f4\u65b0\u3057\u307e\u3057\u305f\u3002\u3054\u8f9b\u62b1\u3044\u305f\u3060\u304d\u3042\u308a\u304c\u3068\u3046\u3054\u3056\u3044\u307e\u3059\u3002&nbsp;<\/p>\n<p><b>[\u306f\u3058\u3081\u306b]<\/b><\/p>\n<p><b><br \/>  Teams Calling\u306e\u30d6\u30e9\u30f3\u30c9\u306a\u308a\u3059\u307e\u3057\u4fdd\u8b77<\/b> 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365\u30ed\u30fc\u30c9\u30de\u30c3\u30d7ID <a href=\"https:\/\/www.microsoft.com\/microsoft-365\/roadmap?filters=&amp;searchterms=543239\" target=\"_blank\">  543239<\/a>\u306b\u95a2\u9023\u4ed8\u3051\u3089\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<p><b>[\u3044\u3064\u8d77\u3053\u308b\u304b:]<\/b><\/p>\n<p>\u30bf\u30fc\u30b2\u30c3\u30c8\u30ea\u30ea\u30fc\u30b9:\u5c55\u958b\u306f2026\u5e745\u6708\u4e2d\u65ec(\u4ee5\u524d\u306f5\u6708\u521d\u65ec)<b>&nbsp;<\/b>\u306b\u59cb\u307e\u308a\u30015\u6708\u4e0b\u65ec(\u4ee5\u524d\u306f4\u6708\u4e0b\u65ec)\u307e\u3067\u306b\u5b8c\u4e86\u3059\u308b\u4e88\u5b9a<b>\u3067\u3059\u3002<\/b><br \/>  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