Tycoon2FA, a persistent PhaaS kit, has resurfaced with a sophisticated device-code phishing tactic targeting Microsoft 365. Attackers exploit OAuth 2.0 device authorization flows, leading victims to complete MFA on legitimate Microsoft domains, unknowingly granting full access to their cloud data. This highlights the need to evolve defense strategies beyond simple MFA enforcement.
#cybersecurity #tycoon2fa #microsoft365
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