Evolution of Ransomware: Multi-Extortion Ransomware Attacks

Multi-extortion ransomware has evolved beyond simple file encryption to include data exfiltration and public leak threats, making traditional backup-based defenses insufficient. In 2025, publicly disclosed ransomware attacks surged 49% year-over-year, with 124 active groups identified. The post covers the evolution from single to double and triple extortion tactics, then promotes Penta Security's D.AMO platform, which uses folder-level file encryption, process-based access control, and backup recovery to neutralize exfiltrated data and block ransomware at every attack stage.