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Microsoft 365 reportedly targeted by a large OAuth attack wave

A reported attack wave against Microsoft 365 involves 290 indicators and uses OAuth-related activity. The supplied information does not specify victims, successful compromises or operational impact.

By DoomRadar · Published on DoomRadar .

Why it matters

Large-scale attacks against Microsoft 365 could affect organizational accounts and cloud-based business operations.

Related source links

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  1. Microsoft 365: Massive OAuth-Angriffswelle mit 290 Indikatoren ↗boerse-express.com · Recorded source date: Aug 29, 2026, 2:01 AM UTC

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