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Anatomy of Oauth Fraud: when Multifactor Authentication Is No Longer Enough

Summary by itsocial.fr
A sophisticated phishing campaign using fake Microsoft OAuth applications was detected at the beginning of 2025 by ProofPoint. This innovative technique, targeting Microsoft 365 accounts, bypassed multifactor authentication (MFA) and relied on a strong visual impossibility to deceive users. By the early months of 2025, ProofPoint researchers had identified a series of activities [...] The post Anatomy of OAuth Fraud: when multifactor authenticat…
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A sophisticated phishing campaign using fake Microsoft OAuth applications was detected at the beginning of 2025 by ProofPoint. This innovative technique, targeting Microsoft 365 accounts, bypassed multifactor authentication (MFA) and relied on a strong visual impossibility to deceive users. By the early months of 2025, ProofPoint researchers had identified a series of activities [...] The post Anatomy of OAuth Fraud: when multifactor authenticat…

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itsocial.fr broke the news in on Friday, August 15, 2025.
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