Gunra ransomware has been identified as a significant threat to critical infrastructure, with affiliates exploiting known vulnerabilities to gain access to networks. The ransomware, which first emerged in 2025, operates as a ransomware-as-a-service model, allowing attackers to target organizations worldwide. US cyber agencies, including CISA, the FBI, and NSA, have issued warnings to critical infrastructure operators to patch their internet-facing systems to prevent exploitation. The warning comes after Gunra affiliates were found to be targeting a range of sectors, including healthcare, financial services, and government. The use of known vulnerabilities, such as those that can be identified through regular patching and updates, highlights the importance of maintaining robust cybersecurity practices1. This threat matters to practitioners because it underscores the need for operational resilience planning, particularly in sectors that are frequently targeted by ransomware attacks, in order to minimize the impact of a potential breach.