Millions of Microsoft Entra Accounts Targeted in OAuth Client ID Spoofing Campaigns

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Millions of Microsoft Entra Accounts Targeted in OAuth Client ID Spoofing Campaigns

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Millions of Microsoft Entra Accounts Targeted in OAuth Client ID Spoofing Campaigns

Tue Jul 14 2026

IAM

hackread.com

Proofpoint details how attackers spoof OAuth client IDs to probe Microsoft Entra accounts, test credentials and bypass common sign-in detections at cloud scale.