Microsoft warns of phishing emails abusing Microsoft 365 outage
Messages cite real Exchange Online incident EX1550543 and warn held mail will be deleted within 24 hours.
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Product
Defender for Office 365
- Mentions · 7d1
- Mentions · 30d2
- All mentions2
- First seenOct 26, 2026
- Last mentioned2h ago
Timeline
2 articles · newest firstProofpoint Joins Microsoft ICES Ecosystem
Proofpoint integrates its Core Email Protection API into Microsoft Defender for Office 365, allowing unified visibility of detections for Microsoft 365 customers.
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Appears with
- Microsoftvendor · 2
- Microsoft 365product · 1
- Proofpoint Inc.organization · 1
- Core Email Protection APIproduct · 1
- Proofpointvendor · 1
- Exchange Onlineproduct · 1
- Microsoft Threat Intelligenceorganization · 1
Entities are extracted by the model from each article. First seen , last mentioned . Watching keeps it in this browser only (no account); the watchlist page and dashboard alerts use it.