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MalwareMay 17, 2026

Tycoon2FA hijacks Microsoft 365 accounts via device-code phishing

Tycoon2FA phishing kit adds device-code attacks to hijack Microsoft 365 accounts via Trustifi URLs.

The Tycoon2FA phishing-as-a-service platform, recently disrupted by law enforcement in March 2026, has rebuilt operations and now supports device-code phishing attacks against Microsoft 365 accounts. The kit abuses legitimate Trustifi click-tracking URLs to redirect victims through multiple obfuscation layers, ultimately tricking them into authorizing attacker-controlled devices via OAuth 2.0 device authorization flows. Device-code phishing attacks have surged 37x this year across at least ten PhaaS platforms, with Tycoon2FA adding advanced anti-analysis protections including 230+ vendor blocklists and debugger timing traps.

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  • malware — Tycoon2FA
  • mitre_attack — T1566.002
  • mitre_attack — T1528

Entities

Microsoft (vendor)Trustifi (vendor)Abnormal Security (vendor)Microsoft 365 (product)OAuth 2.0 (technology)