“As a hospital system managing thousands of servers in a critical infrastructure, implementing the CIS Benchmarks is essential for us. The critical nature of our systems means that any disruption can have serious consequences for patient care. After facing ongoing challenges with GPOs and custom scripts, we found CalCom’s solution. It enabled us to automate the configuration hardening process across our entire server environment with minimal disruption to our clinical applications and essential services. CalCom has served as both a powerful technology solution and a trusted partner throughout this implementation ”
The Challenge – Meeting CIS Benchmarks Without Disrupting Patient Care
A large not-for-profit healthcare system serving over a million patients across multiple hospitals, clinics, and specialty care centers in the eastern United States operates with one clear mission: deliver high-quality, uninterrupted care to every patient, every day.
To support that mission and meet HIPAA requirements, the IT department adopted the CIS Benchmarks as its server hardening standard. With thousands of Windows servers supporting critical clinical systems, the stakes were high. A single misconfiguration could disrupt care, violate HIPAA by exposing sensitive data, or delay access to essential services.
To harden their server environment, the healthcare system needed to:
- Roll out hardened baselines across a complex, distributed infrastructure
- Avoid outages or broken dependencies during implementation
- Maintain 24/7 access to patient data and applications
- Coordinate changes across multiple hospitals, clinics, and teams spread over a wide geographic area
Initial attempts to implement CIS Benchmarking using Group Policy Objects (GPOs) and custom scripts fell short. For this healthcare network, uninterrupted access to systems and data isn’t just important—it’s critical, especially for Level I trauma centers.
The Solution – Securing Servers Without Impacting Patients
With trauma centers running 24/7 and no tolerance for downtime, the IT team needed a safer way to enforce CIS Benchmarks across their thousands of Windows servers. Their existing approach of using Group Policy Objects and custom scripts of was slow, risky, and too brittle for a live clinical environment.
They deployed CalCom Hardening Suite (CHS) to shift from guesswork to precision. First, CHS entered learning mode, analyzing how each production server actually behaved. It mapped every dependency, what services were running, what applications were talking to each other, and what might break if a setting changed.
From there, CHS generated a custom report for each server, showing exactly how a policy change would affect that system. These insights helped the IT team harden servers confidently, knowing that no update would bring down an EHR system or interrupt access to patient data.
With CHS, they gained:
- Predictable, no-downtime server hardening
- Clear visibility into real-world policy impact
- Fewer manual scripts and troubleshooting cycles
- Compliance that didn’t compromise clinical continuity
- A structured rollout that worked across hospitals and clinics
The Result: Uninterrupted, High Quality Patient Care
After the initial rollout, the next challenge was maintaining hardened baselines in a live healthcare environment—where systems are constantly changing, and uptime isn’t optional. Without CHS, the team would need to rely on manual checks, basic scanners, and complex change control just to keep pace—putting both operational efficiency and patient safety at risk.
With CHS, baseline enforcement became continuous and predictable. The platform monitors for configuration drift and flags any deviation that could introduce security or performance issues—before it affects clinical systems. Centralized oversight helps prevent misconfigurations, whether accidental or malicious, while reducing the burden on IT staff.
CHS gave the organization a stable, scalable foundation for securing critical systems—without interrupting the delivery of care.
