Miyako: An Emerging Threat Actor with Advanced Capabilities

**Executive Summary:** The report profiles "Miyako", an emerging sophisticated threat actor suspected of East Asian links that targets critical infrastructure, government, education, and industry using custom malware ("Kintsugi"), zero-day exploitation, credential dumping, and RaaS-enabled double-extortion; it includes MITRE-mapped TTPs, case studies of claimed access sales in 2024, placeholder YARA artifacts, and recommended multi-layered defense strategies.