A sophisticated phishing-as-a-service tool called "Starkiller" is effectively bypassing multi-factor authentication and other standard security defenses. Its key technique is live-proxying, which funnels victims through the attacker's infrastructure to the actual legitimate login pages, stealing credentials and session tokens in real-time. The tool is notable for its user-friendly, SaaS-like interface, which dramatically lowers the technical skill barrier for cybercriminals. The main topics covered are the tool's capabilities, its method of attack, and its impact on phishing defense.