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#5 The Hacker News general July 14, 2026 at 11:21 UTC

OAuth Client ID Spoofing Lets Attackers Validate Stolen Microsoft Entra Credentials

By [email protected] (The Hacker News)

AI Summary

At least two distinct threat actor groups are exploiting a novel OAuth client ID spoofing technique to enumerate user accounts and validate stolen credentials in Microsoft Entra ID environments without generating any successful sign-in events in telemetry. This evasion method allows attackers to operate beneath standard detection thresholds, making it invisible to defenders relying on sign-in logs. Organizations using Entra ID should audit OAuth application registrations and enhance anomalous token request monitoring.

Read full article → https://thehackernews.com/2026/07/oauth-client-id-…

Relevance score: 85.0/100

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