Threat Actors Use Passkey Phishing to Breach Cloud
🛡️ Microsoft disclosed two related campaigns: one sent over a million CEO-impersonation invoice scams in August 2026 to induce ACH transfers, and the other used passkey-themed social engineering since May 2026 to compromise cloud accounts. The fraud campaign leveraged generative AI, forged threads, and bogus domains to target enterprise finance teams. Cloud intrusions employed voice/SMS pretexts, counterfeit sign-in pages, AitM and device-code flows, and persistent MFA enrollment to enable extensive Microsoft Graph, SharePoint, OneDrive, and mailbox access.