The Zeppelin ransomware, operated by Ianis Aleksandrovich Antropenko and his coconspirators between 2019 and 2022, targeted a wide range of victims, including healthcare and IT firms. The attacks involved encrypting and exfiltrating sensitive data, followed by ransom demands for decryption, non-disclosure, or deletion of stolen information. Victims faced operational disruptions, potential exposure of personal, financial, or proprietary data, and financial losses from ransom payments. The ransomware exploited flaws in MSP (Managed Service Provider) software, amplifying the risk of cascading breaches across interconnected systems. While the operation was later dismantled (with decryption keys recovered by 2020), the long-term impact included reputational damage, regulatory scrutiny, and recovery costs for affected organizations. The U.S. DoJ’s seizure of $2.8M in ransom proceeds highlights the scale of extortion, though many victims likely suffered irreversible data leaks or operational halt during active attacks. The sale of Zeppelin’s source code in 2024 further risks revival of similar threats against vulnerable sectors.