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TechRadar
TechRadar
Sead Fadilpašić

Experts warn Microsoft Copilot Studio agents are being hijacked to steal OAuth tokens

Microsoft TechRadar
Windows 11 Copilot App AI Agents.
  • CoPhish uses Copilot Studio agents to phish OAuth tokens via fake login flows
  • Attackers exploit Microsoft domains to appear legitimate and access sensitive user data
  • Mitigations include restricting app consent, enforcing MFA, and monitoring OAuth activity

Security researchers from Datadog Security Labs are warning about a new phishing technique weaponizing Microsoft Copilot Studio agents to steal OAuth tokens and grants attackers access to sensitive information in emails, chats, calendars, and more.

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