U.S. authorities have issued warnings about the growing threat of Interlock ransomware to India’s critical infrastructure, particularly utilities, telecom, and healthcare. Attackers are exploiting unpatched SimpleHelp Remote Monitoring and Management tools to infiltrate third-party billing software providers, exposing vulnerabilities in the supply chain. The ransomware employs tactics such as targeting virtual machines and using a double extortion model, making it especially dangerous. To counter these risks, Indian operators are advised to enforce strict patching, adopt multi-factor authentication, segment networks, and closely monitor unusual activity. Securing hypervisors, maintaining immutable backups, and conducting user awareness campaigns on social engineering are also emphasized, along with embedding strong security clauses in vendor contracts. With ransomware threats escalating, proactive measures and coordinated responses are seen as critical to protecting operational continuity, financial workflows, and customer trust across India’s vital sectors.