Qilin ransomware emerged as the most active threat group during the first half of 2026, leading global ransomware activity tracked by Cyble Research and Intelligence Labs (CRIL). The group conducted 370 attacks in North America during this period, accounting for nearly one-fifth of all ransomware incidents in the region. Qilin also maintained significant operations in Europe and the UK with 158 attacks, 64 incidents in Asia-Pacific, and 40 attacks in South America, demonstrating a truly global operational reach.
The group's success stems from the ransomware-as-a-service (RaaS) business model, which allows threat actors to operate through decentralized networks of affiliates, initial access brokers, and specialized service providers. This structure enables rapid expansion and simultaneous campaigns across multiple regions without relying on a single internal team. The RaaS model has proven resilient against law enforcement actions, as disruption of individual operators does not necessarily halt overall campaign activity.
Qilin targeted sectors where operational disruption creates maximum pressure on victims. Manufacturing organizations faced particular risk because ransomware can halt production lines and disrupt supply chains. Healthcare providers encountered additional pressure due to the critical nature of patient care and sensitivity of medical data. Construction firms and professional services organizations, including legal and consulting companies, also appeared frequently among victims because they manage confidential client information that increases the effectiveness of double-extortion tactics.
The group's targeting strategy reflected a calculated approach rather than opportunistic attacks. By focusing on industries dependent on continuous system availability and those holding sensitive information, Qilin maximized the likelihood that victims would face significant financial or regulatory consequences. This approach aligns with broader ransomware trends where threat actors increasingly combine data encryption with theft and threatened exposure of confidential information.
Defending against Qilin and similar threats requires organizations to address multiple security layers. Priority actions include reducing exposed attack surfaces, implementing stronger identity and access controls, and actively monitoring for suspicious access patterns. Since ransomware operators increasingly rely on stolen credentials and compromised infrastructure for initial access, prevention strategies must receive equal attention to incident response capabilities. Organizations should also prepare for scenarios involving both data encryption and theft, as double-extortion has become standard practice among sophisticated ransomware groups.
Source: https://thecyberexpress.com/qilin-ransomware-h1-2026/