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Entra passkey enrollment vishing targets Microsoft 365 users

ID: 4b8a0f71-ac31-564a-bf5b-f17366b5e729

STIX ID: report--4b8a0f71-ac31-564a-bf5b-f17366b5e729

Feed Name: Bleeping Computer

Threat Score
70/100

Date Published: 2026-07-08

Date Updated: 2026-07-19

Author: Bill Toulas

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A malicious vishing campaign attributed to O-UNC-066 (Pink) calls Microsoft 365 users and directs them to convincing phishing sites that mimic Entra passkey enrollment; an operator-controlled PHP kit captures credentials and MFA responses in real time, allowing attackers to register passkeys they control, access SharePoint/OneDrive data, and publish stolen samples on an extortion site to pressure victims for ransom.

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