In the heart of Japan's bustling business district, whispers of a looming cyber threat have reached the ears of a dedicated team of cybersecurity operatives. An elusive adversary, APT17, known as Deputy Dog, is orchestrating a sophisticated campaign leveraging a zero-day vulnerability in Internet Explorer. Their target: prominent Japanese organizations. Participants are tasked with dissecting this complex operation, tracking the adversary from initial access to the final data exfiltration, and fortifying defenses against future incursions.