Defending SaaS-Based Applications Against ShinyHunters OAuth Abuse

Microsoft analyzes how attackers associated with ShinyHunters abused trusted OAuth relationships, voice phishing, and third-party SaaS integrations to gain unauthorized access to enterprise applications without exploiting software vulnerabilities. The article introduces new detection and governance capabilities for OAuth-connected applications and emphasizes continuous monitoring, least-privilege access, and stronger oversight of third-party integrations to reduce SaaS security risks. 

https://www.microsoft.com/en-us/security/blog/2026/07/13/defending-saas-based-applications-against-shinyhunters-oauth-abuse

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