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Device Code Phishing: Turning a Convenience Feature Into an MFA Bypass
July 22, 2026 · Trend Micro · Severity: MEDIUM
This article explains how device code phishing works, abusing a legitimate authentication feature for devices with limited input capabilities. It examines a recent observed case and recommends layered security measures to prevent MFA bypass.
Key Takeaways
- Device code phishing exploits a legitimate OAuth feature for input-limited devices.
- Attackers trick users into completing authentication on attacker-controlled devices.
- Organizations should restrict device code authentication and train users.