Qilin Ransomware Group Leads Surge, Sinobi's Rapid Rise

**Executive Summary:** The Cyble August 2025 ransomware landscape report documents a sustained rise in ransomware activity (467 attacks in August), with Qilin leading in claimed victims and new groups like Sinobi and The Gentlemen rapidly emerging; it details geographic and sector targeting (notably the U.S., construction, professional services, manufacturing, and healthcare), the appearance of new strains and leak sites (Charon, Cephalus, BlackNevas), supply-chain and critical infrastructure impacts, and recommends resilience measures such as segmentation, zero trust, immutable backups, and robust monitoring and incident response.