Ryuk is a sophisticated ransomware threat that has been targeting businesses, hospitals, government institutions and other organizations since 2018. The group behind the malware is known for using manual hacking techniques and open-source tools to move laterally through private networks and gain administrative access to as many systems as possible. The ransom amounts associated with Ryuk typically range between 15 and 50 Bitcoins, or roughly between $100,000 and $500,000, although higher payments have reportedly been paid. Microsoft refers to Ryuk as a human-operated ransomware attack.”]