OAuth Client ID Spoofing Enables Stealthy Cloud Account Enumeration
3 Articles
3 Articles
Proofpoint, a law enforcement and cybersecurity company, has detected a new technique of evasion in large-scale campaigns against Microsoft Entra, a product designed to manage identities and accesses in the cloud. Research reveals that different attackers have abused the impersonation of OAuth client identifiers to circumvent traditional application-based detection mechanisms.
OAuth Client ID Spoofing Enables Stealthy Cloud Account Enumeration
Microsoft Entra ID sign-in logs have provided defenders with critical visibility into authentication activity, helping security teams investigate user enumeration, password spraying, and other identity-based attacks. However, research from Proofpoint shows threat actors are increasingly using a technique called OAuth client ID spoofing to evade common detection methods while identifying valid user accounts and credentials. Key Takeaways Attack…
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