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Threat IntelligenceSep 13, 2026

Attackers Use Passkey Phishing to Hijack Microsoft Cloud Accounts and Exfiltrate Data

Attackers use AI-generated emails and passkey phishing to hijack Microsoft cloud accounts.

Microsoft has detailed two distinct attack campaigns. The first involved AI-generated, CEO-impersonating emails sent to finance departments to trick them into making fraudulent ACH transfers. The second campaign uses passkey-themed social engineering to trick users into compromising their Microsoft cloud accounts, leading to data exfiltration.

AI summary of the linked source. Not reviewed by an editor. How this works

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The lesson from this incident

Full lesson

Attackers are exploiting user trust through two sophisticated social engineering campaigns: AI-generated CEO impersonation emails targeting finance teams for fraudulent wire transfers, and passkey-themed phishing luring users into compromising their Microsoft cloud credentials. The root issue is that employees lack the awareness to distinguish legitimate authentication requests from convincing fakes, even when modern passkey technology is referenced to appear credible. Once cloud accounts are compromised, attackers move quickly to exfiltrate sensitive data before detection. This matters because AI-enhanced phishing dramatically lowers the skill barrier for attackers while raising the believability of attacks, making human judgment alone an insufficient defense.

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Indicators of Compromise

Extracted by AI from the linked source. Not reviewed by an editor. How this works

  • domain — service-nowinc[.]com
  • domain — domainlify[.]net

Entities

Microsoft Cloud (product)ServiceNow (product)ACH transfers (technology)Passkey (technology)MFA (technology)SSO (technology)