The untold story of incident response: Insider’s Gambit

A small payment provider suffered a financially significant fraud when an attacker obtained credentials and detailed system documentation from a developer's breached personal cloud account, studied the payment system, then executed premeditated transactions using TOR and money mules to steal over $500,000; Group-IB DFIR investigated, identified the external compromise (not an insider), and recommended compromise assessments, 2FA, training, and secure development practices.