Weekly briefing Week 2025-W52 Weekly briefing Week 52 · 22 Dec – 28 Dec 2025 UTC · assess the changes, then plan the next dates.
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2 source records · 2 groups
23 Dec 2025
Message Center Defender
Notice updated · Microsoft 365 Message Center Archive by Merill Fernando
Microsoft Defender XDR
Assessment context Microsoft marks it a major change
22 Dec 2025
Message Center Defender
Notice updated · Microsoft 365 Message Center Archive by Merill Fernando
Microsoft Defender XDR
Assessment context Microsoft marks it a major change
Groups collect records about the same product or named security topic on one UTC date. Open a record for its source and history; grouping alone does not establish a shared cause or impact.