CalCom Software, established in 2001, develops server hardening and configuration security solutions for organizations seeking to reduce attack surface through enforced security baselines. The company's primary product, the CalCom Hardening Suite (CHS), is a security baseline hardening platform designed to help organizations define, test, deploy, and maintain secure server configurations without causing application outages or operational disruptions. The platform addresses misconfigurations—a persistent and commonly exploited attack vector—by automating the process of detecting configuration drift, enforcing hardening policies, and maintaining continuous compliance rather than relying on periodic point-in-time audits. CHS supports multiple operating systems and server roles, accounting for the sensitivity of applications to configuration changes. CalCom also offers a dedicated IIS server hardening product (CSS for IIS) and a Server Audit & Compliance Analysis tool for policy compliance reporting. These solutions are aimed at IT infrastructure and security teams in regulated industries such as banking, healthcare, and critical infrastructure, where compliance with frameworks like PCI DSS, NIST, CMMC, FFIEC, and HIPAA is required. The company's approach centers on safe, automated, and continuous hardening as a preventive security control, targeting the gap between vulnerability management and endpoint detection tools on one side, and configuration enforcement on the other. CalCom positions configuration security as a distinct and underinvested pillar of device posture management alongside EDR/XDR and vulnerability scanning.