Best Practices For Securing Electronic Health Record (EHR) Systems

Securing EHRs with Zero Trust & Microsegmentation

Protecting Patient Data in an Evolving Threat Landscape

Did you know that medical records are among the hottest commodities on the dark web? Due to the sensitive data they contain, these records fuel a range of illegal activities, from insurance fraud, to extortion, to the black-market prescription drug trade. This reality is why protecting Electronic Health Record (EHR) systems isn’t just an IT concern—it’s about safeguarding identities, livelihoods, and even lives.

Given the high value placed on EHR data, focusing only on perimeter defenses is no longer sufficient. We need a more effective and proactive approach. That brings us to zero trust principles, including microsegmentation. Working together, they are a critical part of EHR security. Instead of assuming trust within a network, these methods verify every user, device, and application, creating a layered defense that’s much harder to breach.

Understanding Zero Trust for EHR Security

At its core, zero trust operates on a simple yet powerful principle: trust nothing, verify everything.

This means implementing:

• Identity and Access Management (IAM) systems for granular identity verification and least-privilege access enforcement – for users, devices, and non-human identities like APIs, bots, and service accounts.
• Phishing-resistant multifactor authentication (MFA) for granting explicit access.
• AI-driven monitoring to alert on unusual activity and flag potential threats in real-time.
• Encryption to protect data both at rest and in transit, keeping sensitive patient information out of the wrong hands.
• Network segmentation and microsegmentation, which isolates critical systems like EHR environments, making it far more difficult for attackers to move laterally if they gain a foothold.

Microsegmentation: Key to EHR Security

If you are new to microsegmentation, it involves dividing applications and workloads into smaller, more manageable zones. Imagine creating mini-fortresses within your network. If a breach occurs in one zone, the attacker is contained, unable to access other areas. Microsegmentation not only limits damage but also helps meet compliance requirements like HIPAA, HITECH, and NIST standards. To effectively implement microsegmentation for securing EHRs, organizations should:

1. Identify critical EHR assets and workflows.
2. Establish explicit access control mechanisms.
3. Mandate the use of multi-layered authentication.
4. Continuously monitor and enforce defined security policies.

Regulatory Compliance & Cybersecurity Standards

Safeguarding patient data is both a legal requirement and an ethical imperative. This is why healthcare organizations operate under some of the most stringent data privacy and protection regulations and why applying zero trust principles and microsegmentation practices to EHRs and other data repositories is a must-do for compliance. 

• HIPAA: Requires organizations to protect physical and electronic protected health information (PHI/ePHI) from unauthorized access and disclosure.
• HITECH Act: Strengthens HIPAA with additional security and breach notification requirements.
• NIST 800-171 and 800-53: Applies to healthcare organizations that handle Controlled Unclassified Information (CUI) or that access federal systems or data as contractors or subcontractors.
• PCI DSS: Ensures proper security controls when handling electronic payments in healthcare or other systems.

Security models like zero trust and microsegmentation fundamentally help meet these regulatory mandates. Structured also offers a host of governance, risk management and compliance (GRC) services to help healthcare organizations achieve adherence.

GRC services like risk assessments, penetration testing, and incident response planning are essential for identifying weaknesses in EHR systems, applications, and IT infrastructure before attackers can exploit them. Here are some suggested services to place you on firmer footing:

• Standards-based Risk Assessment: Identify, evaluate and mitigate vulnerabilities in infrastructure and data handling practices. Included with these assessments is a fully documented report, including an executive summary, detailed technical description of the findings, and remediation recommendations.
  
• Sensitive Data Identification and Classification: You can’t protect something if you don’t know where or what it is. A critical step in information security is properly locating all systems and flows where data resides and then classifying that data.
  
• Penetration Testing and Social Engineering: Simulate real-world cyberattacks on EHR systems and evaluate how well existing security controls detect threats and prevent breach.
  
• Third-Party Vendor Security Audits: Ensures that business associates, cloud providers, and software vendors meet compliance standards and follow strong cybersecurity practices.
  
• Security Policy Review & Incident Response Plans: Review, update and test security policies and breach response procedures to stay ahead of evolving threats.
  
• Vulnerability Management: Scan networks, applications, and databases for security vulnerabilities, misconfigurations, and unpatched systems – especially after moves, adds or changes to your networked environment on-premises, in the cloud, or both.

Take the Next Step in EHR Security

Implementing zero trust and microsegmentation is the most effective way to secure EHRs, protect patient data, and comply with healthcare regulations.

🔹 Need help assessing your EHR security posture?

🔹 Looking for expert guidance on implementing Zero Trust?

Our cybersecurity specialists can help you design and implement an EHR security framework to meet your needs.