BigBear 2.0 phishing campaign hits Microsoft 365 accounts
Researchers at CloudSEK have identified a phishing-as-a-service campaign called BigBear 2.0 that stole over 5,100 Microsoft 365 credentials from users in at least 40 countries. Attackers obtained session cookies and passwords, allowing them to bypass multifactor authentication in hundreds of cases. IT service providers were among the most targeted organizations, increasing the possibility of broader downstream attacks.
- Over 5,100 Microsoft 365 credentials stolen
- Attackers captured 474 MFA-authenticated sessions
- Operation targeted users in at least 40 countries
- IT service providers most frequently targeted
- Stolen data delivered via Telegram bots
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