Healthcare Cybersecurity in 2025: Why Claroty's Medigate, Microsegmentation and IoMT Security Are Critical for Compliance

The Evolving Healthcare Cybersecurity Landscape 2025

Healthcare organizations face unprecedented cybersecurity challenges in 2025. With an average of 43 attacks per healthcare organization in the past 12 months and data breaches costing $10.93 million per incident, the stakes have never been higher. The increased integration of Internet of Medical Things (IoMT) devices into more aspects of patient care has created an expanded attack surface that traditional security measures struggle to protect.

The Rise of Lateral Movement Attacks

The February 2024 Change Healthcare ransomware attack by ALPHV (BlackCat) demonstrated how sophisticated attackers leverage lateral movement to devastating effect. After gaining initial access, the attackers moved laterally through the network, compromising over 100 critical applications and disrupting nationwide healthcare operations.

Critical IoMT Attack Patterns

In June 2024, the Qilin ransomware group's attack on Synnovis showcased the vulnerability of medical devices. The attackers first compromised a medical imaging device, then used it to move laterally through the network, exfiltrating 400GB of sensitive healthcare data and disrupting blood testing services across London.

Understanding the IoMT Security Challenge

Multiple studies estimate that between 41% and 88% of cyberattacks involve IoMT devices, with an average of 6.2 vulnerabilities per medical device. A recent Forescout study identified 162 new vulnerabilities in connected medical devices, with DICOM workstations and PACS systems being particularly vulnerable. 52% of IoMT devices run on Windows, but only 10% have active anti-malware protection. This is particularly alarming, with 40% of end-of-life devices receiving minimal or no security patches. 53% of connected medical devices contain at least one unpatched critical vulnerabilites.

The Legacy Device Risk

Over 40% of medical devices are approaching end-of-life status, making them particularly vulnerable. In late 2023, attackers exploited vulnerabilities in legacy infusion pumps to gain network access, compromising patient data across multiple hospital departments.

Claroty's Medigate: The Foundation for IoMT Security

The 2023 Harvard Pilgrim Health Care attack demonstrated why comprehensive device visibility is essential. Attackers exploited an unmanaged DICOM workstation to establish initial access, compromising 2.6 million patient records due to poor network segmentation.

Success at Bupa Cromwell Hospital

Claroty's Medigate platform demonstrated success at Bupa Cromwell Hospital, identifying previously unknown devices and vulnerabilities that traditional security tools missed. Combined with Elisity's microsegmentation, the hospital contained a potential ransomware attack in March 2024.

The Strategic Value of Microsegmentation

The Tampa General Hospital cyber attack in 2023 illustrated why modern healthcare networks require advanced security measures. While attackers breached the network through a third-party vendor, proper microsegmentation could have prevented access to 2.4 million patient records.

Comprehensive Framework and Regulatory Requirements in 2025

The regulatory landscape for healthcare cybersecurity has evolved dramatically in response to major breaches and emerging threats. Understanding these requirements is crucial for implementing effective security strategies.

National Framework Requirements

The HHS 405(d) Health Industry Cybersecurity Practices have evolved significantly, now requiring healthcare organizations to implement "defense-in-depth" network segmentation. The guidelines specifically mandate microsegmentation for critical clinical networks and systems containing electronic Protected Health Information (ePHI). Organizations must demonstrate capabilities to isolate medical devices and prevent lateral movement between different hospital departments and systems.

Read our white paper: Implementing HHS 405(d) HICP Microsegmentation in Clinical Networks

The HIPAA Security Rule's 2024 updates explicitly require healthcare organizations to implement technical safeguards that prevent unauthorized lateral movement within networks. The Office for Civil Rights (OCR) has clarified that network segregation is a required "reasonable and appropriate" security measure, particularly for systems containing ePHI.

State-Level Regulations

New York's 2024  Hospital Cybersecurity Regulations (effective October 2, 2024) cybersecurity program requirements (Section 405.46) set the benchmark for state-level regulations. The law mandates and requires hospitals to implement stronger security controls for networks. Healthcare organizations must document their network security strategies and prove their effectiveness in preventing lateral movement during security incidents.

California's healthcare cybersecurity AB 749 (effective January 1, 2025), requirements, effective January 2025, mandate "zero-trust architecture" implementation, specifically requiring microsegmentation for all connected medical devices and clinical networks. The law requires quarterly assessments of segmentation effectiveness and documentation of all lateral movement prevention measures.

International Standards and Compliance

The IEC 62443 standard, specifically updated for healthcare environments, now requires microsegmentation as part of its cybersecurity controls. The standard defines specific requirements for zone segmentation and conduit security, directly addressing the need to prevent lateral movement in clinical networks.

The UK's NHS Digital has released new guidance requiring all NHS trusts to implement network segregation and microsegmentation by 2025. This follows the successful implementation at Bupa's Cromwell Hospital, which has become a model for NHS cybersecurity requirements.

Framework Alignment with Modern Security Solutions

Claroty's Medigate platform directly addresses these technical requirements through:

Network Visibility Compliance: The platform meets HHS 405(d) and state-level requirements for complete device visibility and inventory management. Its asset discovery capabilities satisfy the IEC 62443 requirements for comprehensive network monitoring and device identification.

Segmentation Policy Management: Medigate's integration with microsegmentation solutions like Elisity, enables organizations to implement the granular access controls required by HIPAA's updated Security Rule. The platform's policy management capabilities align with New York's cybersecurity requirements for documented network security strategies.

Risk Assessment Documentation: The Elisity platform provides the continuous monitoring and documentation required by California's zero-trust mandates. Its reporting capabilities satisfy NHS Digital's requirements for demonstrating segmentation effectiveness.

Integration Success Stories

GSK's implementation of Elisity’s microsegmentation platform demonstrates the modern Zero Trust principle of least privilege access in meeting these evolving framework requirements. After witnessing NotPetya's $1.4 billion impact on a pharmaceutical company, they implemented Elisity and improved their deployment time by 300% while enhancing security capabilities and ensuring compliance with multiple regulatory frameworks.

Proven Framework Compliance Results

Healthcare organizations implementing Claroty's Medigate with microsegmentation consistently exceed framework requirements while achieving measurable security improvements:

• 75% reduction in attack surface
• 90% faster threat detection
• 60% reduction in incident response time
• 85% improvement in device visibility
• 98% NIST compliance achievement

Building the Business Case for Framework-Compliant Security

Healthcare cybersecurity investments will see even bigger ROI in 2025, particularly when aligned with regulatory requirements. Organizations with robust microsegmentation report lower breach costs while maintaining compliance with all major frameworks. Claroty's Medigate customers demonstrate faster vulnerability remediation and streamlined compliance reporting.

Implementation Economics and Compliance Benefits

While implementation requires an initial investment in assessment, deployment, and training, organizations report significant benefits across both security and compliance: an average savings of $2.1M per incident, 20-30% reductions in insurance premiums, improved operational efficiency, reduced compliance penalties, streamlined regulatory reporting, and faster framework certification processes.

Strategic Framework Alignment for 2025 and Beyond

The integration of Claroty's Medigate with Elisity’s microsegmentation platform has become essential for healthcare organizations navigating complex regulatory requirements in 2025. Success stories like Bupa Cromwell Hospital demonstrate how this approach effectively addresses both security needs and compliance mandates.

The Path Forward

Healthcare organizations must approach security and compliance holistically, recognizing that framework requirements will continue to evolve. Key considerations include:

• Building comprehensive device visibility capabilities
• Implementing dynamic microsegmentation policies and strategies
• Maintaining continuous compliance monitoring
• Developing robust documentation processes
• Establishing clear metrics for success
• Creating sustainable compliance programs

What are your plans for 2025?

As healthcare cybersecurity frameworks become increasingly stringent in 2025, the combination of Claroty's Medigate and Elisity's microsegmentation platform provides organizations with a clear path to both security and compliance. By implementing these solutions, healthcare organizations can protect patient data, maintain operational continuity, and ensure ongoing regulatory compliance across national, state, and international frameworks.

Securing medical devices requires a comprehensive approach that combines technology, processes, and people. By implementing identity-based microsegmentation and maintaining strong security practices, healthcare organizations can protect patient safety while enabling innovation in care delivery.

Be sure to read our view of the Forrester Wave™ Microsegmentation Solutions Q3 2024 Healthcare IT View and and learn how modern identity-based microsegmentation platforms like Elisity are enabling enterprises to reduce risks by preventing lateral movement and closting attack surface gaps.

The future of network security and your Zero Trust strategy lies not just in more rules or bigger firewalls, but in smarter, more efficient approaches that empower rather than overwhelm your critical cybersecurity workforce.

To learn more about how the Elisity platform can help protect your organization meet Zero Trust goals and enhance your overall security posture, contact us for a conversation or a personalized demo.